[MMI] Connect MMI flow in one step less

[albertolive]

Explanation

Shorten the custodian flow and save valuable time by eliminating one unnecessary step.

Expected

Screen.Recording.2023-07-21.at.10.16.32.mov

Current

Screen.Recording.2023-07-21.at.10.17.48.mov

AC

• There is one step less
• A PR has been created

Pre-merge author checklist

• I've clearly explained:
  • What problem this PR is solving
  • How this problem was solved
  • How reviewers can test my changes
• Sufficient automated test coverage has been added

Pre-merge reviewer checklist

• Manual testing (e.g. pull and build branch, run in browser, test code being changed)
• PR is linked to the appropriate GitHub issue
• IF this PR fixes a bug in the release milestone, add this PR to the release milestone

[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

Merging #20143 (972d84d) into develop (13faeea) will increase coverage by 0.01%.
The diff coverage is 58.33%.

@@             Coverage Diff             @@
##           develop   #20143      +/-   ##
===========================================
+ Coverage    69.36%   69.36%   +0.01%     
===========================================
  Files          987      987              
  Lines        37287    37284       -3     
  Branches     10011    10010       -1     
===========================================
+ Hits         25861    25862       +1     
+ Misses       11426    11422       -4     

Impacted Files	Coverage Δ
ui/pages/institutional/custody/custody.js	51.11% <58.33%> (+1.38%)	⬆️

[metamaskbot]

Builds ready [972d84d]

• builds: chrome, firefox
• builds (beta): chrome
• builds (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
  • content-script: 0
  • contentscript: contentscript
  • disable-console: disable-console
  • inpage: inpage
  • policy-load: policy-load
  • sentry-install: sentry-install
  • ui: 0, 1, 10, 11, 12, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1578 ± 47 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	107	167	126	14	7
		domContentLoaded	1452	1910	1578	98	47
		load	1452	1910	1578	98	47
		domInteractive	1452	1910	1578	98	47

Bundle size diffs

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