fix: Fix attribution generation

[Gudahtt]

Description

Attribution generation is currently broken because the root postinstall script uses tsx, but attribution generation uses a focused production-only install that omits development dependencies like tsx. Beyond that, the foundry installation is something we don't want when generating attributions, even if it did work.

The attribution generation script has been updated to unset the root postinstall script prior to installation.

Related issues

Fixes #30497

Manual testing steps

Run yarn attributions:generate

Screenshots/Recordings

N/A

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.

[davidmurdoch]

works on my machine!

[metamaskbot]

Builds ready [737d74c]

• builds: chrome, firefox
• builds (flask): chrome, firefox
• builds (MMI): chrome
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1671 ± 131 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	737	1955	1570	249	120
		domContentLoaded	1390	2601	1640	268	129
		load	1409	2613	1671	272	131
		domInteractive	22	301	50	60	29
		backgroundConnect	9	79	34	25	12
		firstReactRender	14	73	33	24	11
		getState	6	51	15	14	7
		initialActions	0	0	0	0	0
		loadScripts	1000	1977	1225	220	106
		setupStore	7	64	14	16	8
		uiStartup	1561	2746	1884	273	131

Bundle size diffs

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