fix: ensure DAG trigger form submits with updated parameters upon key…

[dannyl1u]

closes: #42157
Fixes bug where pressing "enter" on the keyboard submitted the DAG trigger form without updated values.
Fixed by making a call to the existing updateJSONconf() function onsubmit

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[boring-cyborg]

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[pierrejeambrun]

Looking good, working as expected

[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.

[jscheffl]

Thanke for the PR. Just coming "late to the party". So the described bug is fixed but another feature that (we at least) often use is now broken:
If the form is submitted then the "Generated Config JSON" is ALWAYS updated. We often use this to copy&paste previous or generated data to save the effort to manually copy&paste all individual fields. But now if I copy&Paste or change in the JSON field, upon submit() the changes are over-ridden with the "default text" from the form (and so far known gap, individual fields are not updated if the JSON is changed.

[dannyl1u]

@jscheffl sorry about that, looking into it!

[jscheffl]

@jscheffl sorry about that, looking into it!

I'm also lookin ginto this and am in the hell ... complexity of JavaScript and events and what fires when :-(