Do not publish swaps transaction if the estimateGas call made when adding the tx fails.

[danjm]

This PR is explained by the inline comment that is added within the code change.

For now, the swaps that are failed due to the changes in this PR will have the same error screen as all other failures. That will be improved upon with #9948

[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 [29e5374]

• builds: chrome, firefox, opera
• bundle viz: background, ui, inpage, contentscript, ui-libs, bg-libs, phishing-detect
• dep viz: background
• all artifacts

Page Load Metrics (494 ± 37 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	32	93	62	22	11
		domContentLoaded	320	564	492	77	37
		load	322	566	494	77	37
		domInteractive	320	564	492	77	37

[Gudahtt]

LGTM!