ux: Increase the size of the "Custom Modifiers" control

[ryuukk]

Fixes section 2 of #6044

Description of the problem being solved:

Custom modifiers is too small, specially when the builds has to put spectre/ag data of if it has notes, it becomes unmanageable

Steps taken to verify a working solution:

• open blank build
• open build with lot of custom modifiers

Link to a build that showcases this PR:

https://pobb.in/e9vCTwRA_eoA

Before screenshot:

After screenshot:

Clear improvement

[ryuukk]

I went with this easiest method, i initially tried to add a mode so it dynamically increases its height, but i failed, i'll try again later

[ryuukk]

Ok looks like it's working now

It'll properly resize to show the content

https://github.com/PathOfBuildingCommunity/PathOfBuilding/assets/44361234/367a8514-0777-4467-b994-def5d824e58e

[ryuukk]

• If the box is going to dynamically increase its height, there's no need for the vertical scrollbar.

I agree, i'll check how to disable them

• There should probably be some upper limit to how tall the box is, perhaps make it a config (this can be done later)

I agree, i'll what can be done

• When opening an old build with a large amount of custom mods, it doesn't update the size until you click on the box

I'll try to fix that

• The most jarring thing though is that every time you hit enter to add a new line all the text jolts up one line then back when the box adjusts to make space

Yeah, that's how the UI framework handles resizing that control, i haven't, and i'm not willing to debug this, unless i have more time