feat: Double Sentry performance trace sample rate (#27468) (#27663)

This is a cherry-pick of #27468 for v12.5.0. Original description below:

## **Description**

The Sentry trace sample rate for production has been doubled, to take
advantage of increased Sentry transaction quotas for our account.

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## **Related issues**

Closes #27467

## **Manual testing steps**

It's not easy to test this because it's probabilistic.

## **Screenshots/Recordings**

N/A

## **Pre-merge author checklist**

- [x] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding

Standards](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've completed the PR template to the best of my ability
- [x] I’ve included tests if applicable
- [x] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [x] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-extension/blob/develop/.github/guidelines/LABELING_GUIDELINES.md)).
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.

app/scripts/lib/setupSentry.js

@@ -123,7 +123,7 @@ function getTracesSampleRate(sentryTarget) {
     return 1.0;
   }
 
-  return 0.01;
+  return 0.02;
 }
 
 /**