Backport of UI Bug fix, cursor jumps in KVv2 after initial input into release/1.15.x

[hc-github-team-secure-vault-core]

Backport

This PR is auto-generated from #27120 to be assessed for backporting due to the inclusion of the label backport/1.15.x.

The below text is copied from the body of the original PR.

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This was a fun one 🕵🏻‍♀️.

Regression PR (I think, but I'll test on 1.15.x to make sure)
Fixes Issue #26634

• Codemirror's setValue resets the cursor position.
• It was being called in the modifier because the following condition was passing this._editor.getValue() !== namedArgs.content
• The reason these values did not match was because we had in—KVv2 only— set the default value as a flat json object without whitespace:
  
  vs what Codemirror's namedArgs.content is set at by default:
  

This is not an issue in Cubbyhole which is how I found the solution to match the objects. TLDR, I used this function to figure out what we needed and brought it into the kv-data-fields component to properly set the starting value, tada!

Bug:

bug-jump.mov

With Fix:

fix-jump.mov

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Overview of commits

• 66268d6

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Build Results:
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CI Results:
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