Test find in terminal improvements

[alexr00]

Ref #58826

Complexity: 2

• Mac @isidorn
• linux @chrmarti
• Windows @rebornix

Find widget in terminal should now find across wrapped lines(note that it still only finds the first occurrence in each line), find using regex, find whole word, and find case sensitive.

[chrmarti]

@alexr00 For me #59321 needs to be fixed before I can continue testing. Maybe prioritize that for today, so we can do some more testing tomorrow.

[alexr00]

@chrmarti, it's fixed already so you should be good for testing tomorrow already. It looks like the latest update of xterm.js had some regressions. @Tyriar reverted the update in 1e058b7

[alexr00]

Closed the wrong issue.

[rebornix]

Tested #30874 and since we are using js regex search in main thread, it still crashes VSCode. We share the same root cause here.