Defer re-showing Find widget when restoring hidden webview (may fix #177046)

[gjsjohnmurray]

This is a speculative change which I hope will fix #177046. I am unable to determine whether or not it does because of #136476 (webview find widget doesn't work in OSS builds). Hence submitting the PR as a draft.

[gjsjohnmurray]

@rzhao271 is there a way I can build and test this myself? If not please try it yourself when endgame pressure subsides. Or maybe you already tried my idea and found it made no difference.

[rzhao271]

Hi John, thanks for the PR and the bump!
In this case, there are some internal processes involved and I had to test the change myself. I have confirmed that the program still crashes with your change on Electron 30.
Some good news is that Deepak and I have just merged in a change to Electron 32 to fix the issue on the internal Electron level.
Closing this PR. @deepak1556 could we make a tracking issue for Electron 32 adoption in VS Code?

[deepak1556]

You can track the progress for Electron 32 adoption in #218245

We will merge it once 1.94 release goes out.