Allow advanced inline gas editing when there is an estimates unavailable error

[danjm]

This PR fixes an issue found by @PeterYinusa when QAing v10.0.2

It ensures that if estimates from our api are not available, the user is able to do inline editing in the advanced gas popover.

[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 [7843129]

• builds: chrome, firefox, opera
• build viz: Build System
• code coverage: Report
• storybook: Storybook
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8
  • common: 0, 1, 2, 3
  • contentscript: contentscript
  • disable-console: disable-console
  • inpage: inpage
  • phishing-detect: 0
  • sentry-install: sentry-install
  • ui: 0, 1, 2, 3, 4, 5

Page Load Metrics (688 ± 25 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	54	84	65	10	5
		domContentLoaded	623	810	685	51	24
		load	624	812	688	53	25
		domInteractive	623	810	684	51	24

[PeterYinusa]

LGTM!

[NiranjanaBinoy]

LGTM