docs: update debugging sentry step 3

[Unik0rnMaggie]

Description

When using the command METAMASK_DEBUG=true in the .metamaskrc file and building locally with yarn dist or yarn dist:mv2 MetaMask cannot be loaded on Chrome or Firefox.

By updating Step 3 from development/README.md and using METAMASK_DEBUG=1 the issue is no longer present and the MetaMask extension is loading normally on Chrome and Firefox.

Related issues

Fixes: Loading issues for MetaMask extension when using METAMASK_DEBUG=true and building locally with yarn dist or yarn dist:mv2

Manual testing steps

1. Use METAMASK_DEBUG=1 in the .metamaskrc file
2. Build the project locally with yarn dist or yarn dist:mv2
3. Open the MetaMask extension and see that it's loading with no issues on Chrome or Firefox

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.

[metamaskbot]

Builds ready [49a9a99]

• 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, 6
  • common: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 12, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (2689 ± 322 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	262	3437	1673	978	469
		domContentLoaded	1950	3957	2651	667	320
		load	2003	3975	2689	670	322
		domInteractive	21	182	71	44	21
		backgroundConnect	11	191	43	39	19
		firstReactRender	77	504	153	98	47
		getState	7	85	30	23	11
		initialActions	0	1	0	0	0
		loadScripts	1405	2913	1991	550	264
		setupStore	14	96	39	25	12
		uiStartup	2241	4489	3021	800	384

Bundle size diffs

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

[seaona]

LGTM, congrats on your first PR 🔥

[metamaskbot]

Builds ready [b05c56c]

• 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, 6
  • common: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 12, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (2139 ± 100 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1845	2601	2141	210	101
		domContentLoaded	1783	2506	2091	195	94
		load	1839	2606	2139	208	100
		domInteractive	26	79	51	16	8
		backgroundConnect	8	138	45	31	15
		firstReactRender	57	306	124	65	31
		getState	7	75	26	24	11
		initialActions	0	1	0	0	0
		loadScripts	1299	1944	1564	170	82
		setupStore	13	90	41	26	13
		uiStartup	2053	3072	2416	259	125

Bundle size diffs

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