feat: Improved keyboard navigation in template columns

[Schwehn42]

Description

Closes #5420

Streamlines keyboard interaction with column name/description editing using the template editor and the board (#5401)

• enter to save changes
• shift+enter for newline in textarea component
• escape to cancel changes

Changelog

• ColumnConfiguratorColumnNameDetails: adjusts key binds to save/cancel changes
• change blur mechanic from individual inputs to useOnBlur hook
• adjust test

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas

[BingeCode]

Lgtm, just a few minor things I noticed:

• PR title needs to be changed to align with Contributing.md semantic titles, maybe something like "feat: Improved keyboard navigation in Template columns"
• Escape doesn't register on the onkeydown event on my machine (in any browser), only onkeyup. Does it work for you?

[github-actions]

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