Fix ColorPicker not firing focus, blur, or submit events (#12862)
* fix: ColorPicker not firing focus blur or submit events
* Add changeset for colorpicker events fix
* simplify: only add focus/blur to dialog-button per review
* fix: convert remaining on: directives to new syntax on mixed elements
Convert on:click to onclick on dialog-button and on:change to onchange
on the text input to avoid mixing old Svelte on: directives with new
event handler syntax (onfocus, onblur, onkeydown) on the same element.
* Convert remaining on: event directives to Svelte 5 syntax
Missed a few old-style on: handlers (mousedown, mousemove, mouseup,
click) that were causing the mixed_event_handler_syntaxes build error.
Also ran prettier to fix formatting.
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Co-authored-by: Freddy Boulton <41651716+freddyaboulton@users.noreply.github.com>