[2.0.0-rc2] Normalize number prop type

Patch for composer usage.

2 remaining tasks:

• Job fails: https://git.drupalcode.org/project/ui_patterns/-/jobs/3943531
• Update https://git.drupalcode.org/project/ui_patterns/-/blob/2.0.x/tests/src/Ke... ?

hello, i will take the current work and adds some tests for it

Hi,

Thanks for the update.

I confirm that it still fixes the issue.

Marking as RTBC.

I let you merge.