Fix race condition when editing the "Check" field in the note

[H3mul]

Noticed this weird bug:

• Add a note with a boolean (checkbox) field in the header (eg, closed)
• Enable the "Checked" field function in Board view (set Checked to our boolean field, closed):

• Open the note in a new tab (Projects tab still loaded)
• Change the value of the closed field in the note (not in Board view)

Obsidian freezes, as Projects falls into the following race condition:

1. Note file edit triggers a view update in Svelte
2. Card Checkbox on:check() is triggered, since the checked state changed (call, source)
3. handleRecordCheck is triggered, complementing the checked state again (source)
4. checked state complement causes another file edit trigger again, repeat

Easy fix: only trigger handleRecordCheck() when we click the checkbox in Board view, dont respond to all checked field changes

[Acylation]

Thanks! Will review it this weekend.

[Acylation]

Calendar checkbox has a similar problem. Working on a better fix.