[FLASK] Fix crash with certain permissions on the snap settings page

[FrederikBolding]

Explanation

Fixes a crash that would happen when viewing the settings page with a snap that uses snap_getBip32Entropy.

Manual Testing Steps

1. Install a snap that uses snap_getBip32Entropy
2. Visit its settings page
3. Verify that you can see the snap permissions

[metamaskbot]

Builds ready [dbfd1ac]

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

Page Load Metrics (1671 ± 46 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	95	143	109	14	7
		domContentLoaded	1530	1748	1641	70	34
		load	1530	1918	1671	95	46
		domInteractive	1530	1748	1641	70	34

highlights:

storybook

• ui/pages/settings/settings.stories.js