add labels to missing user_notes
add labels to missing user_notes

fixes CNVS-33583

Test Plan:
-Turn on the Faculty notes feature flag in
 account settings (old feature)
-Navigate to /users/1/user_notes
-Click on create entry
-Notice both text fields that show up have labels
-Navigate to said fields with VO/screenreaders
-Notice they are read with their label

Change-Id: Icecf23574e1852c8149683762eda1342c50a5748
Reviewed-on: https://gerrit.instructure.com/96474
Reviewed-by: Felix Milea-Ciobanu <9384aa226ac9d3237ed0bc52e18ffcb251ee0bf7@instructure.com>
Tested-by: Jenkins
QA-Review: David Tan <6283e310a2278fc51bdc4fb5974f70dd9c3366b9@instructure.com>
Product-Review: Steven Burnett <a0b450117c5d20a22d5c4d52bb8ae13adee003d8@instructure.com>

SwinburneOnline/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,grahamb/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,venturehive/canvas-lms,matematikk-mooc/canvas-lms,matematikk-mooc/canvas-lms,sfu/canvas-lms,matematikk-mooc/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,grahamb/canvas-lms,sfu/canvas-lms,matematikk-mooc/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms