fix: logic for using notifications tabs

[matteoscurati]

Description

This PR introduces two small fixes:

• If there are no snaps with notifications, the tabs for filtering results are not displayed on the notifications page.
• Feature announcements are included in the onChain tab and not in the Web3 tab.

Related issues

Fixes:

Manual testing steps

1. Go to this page...

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 6 lines in your changes missing coverage. Please review.

Project coverage is 65.41%. Comparing base (ed06176) to head (0cfaf8f).
Report is 1 commits behind head on develop.

Files	Patch %	Lines
ui/pages/notifications/notifications.tsx	33.33%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #25350      +/-   ##
===========================================
- Coverage    65.42%   65.41%   -0.01%     
===========================================
  Files         1380     1380              
  Lines        54688    54691       +3     
  Branches     14339    14341       +2     
===========================================
- Hits         35776    35774       -2     
- Misses       18912    18917       +5     

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[metamaskbot]

Builds ready [4a72bf8]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (40 ± 1 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	60	83	68	7	3
		domContentLoaded	8	10	9	1	0
		load	37	46	40	3	1
		domInteractive	8	10	9	1	0

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 72 Bytes (0.00%)
• common: 0 Bytes (0.00%)

[metamaskbot]

Builds ready [53b7997]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (124 ± 155 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	63	105	80	9	4
		domContentLoaded	9	13	11	1	1
		load	39	1532	124	323	155
		domInteractive	9	13	11	1	1

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 72 Bytes (0.00%)
• common: 0 Bytes (0.00%)

[metamaskbot]

Builds ready [0cfaf8f]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (41 ± 2 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	60	158	78	24	12
		domContentLoaded	8	13	9	1	1
		load	38	50	41	3	2
		domInteractive	8	13	9	1	1

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 72 Bytes (0.00%)
• common: 0 Bytes (0.00%)