sharing with user and groups with different case username and groupname using api

[haribhandari07]

Description

Add api tests to:

• share with users and using different case of the username

• share with groups using different case of the group name

Related Issue

Part of #35354

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

• Backport (if applicable set "backport-request" label and remove when the backport was done)

[codecov]

Codecov Report

Merging #35647 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master   #35647   +/-   ##
=========================================
  Coverage     65.68%   65.68%           
  Complexity    18777    18777           
=========================================
  Files          1222     1222           
  Lines         70935    70935           
  Branches       1289     1289           
=========================================
  Hits          46597    46597           
  Misses        23960    23960           
  Partials        378      378

Flag	Coverage Δ	Complexity Δ
#javascript	53.7% <ø> (ø)	0 <ø> (ø)	⬇️
#phpunit	67.06% <ø> (ø)	18777 <ø> (ø)	⬇️

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[codecov]

Codecov Report

Merging #35647 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master   #35647   +/-   ##
=========================================
  Coverage     65.68%   65.68%           
  Complexity    18777    18777           
=========================================
  Files          1222     1222           
  Lines         70935    70935           
  Branches       1289     1289           
=========================================
  Hits          46596    46596           
  Misses        23961    23961           
  Partials        378      378

Flag	Coverage Δ	Complexity Δ
#javascript	53.7% <ø> (ø)	0 <ø> (ø)	⬇️
#phpunit	67.05% <ø> (ø)	18777 <ø> (ø)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e22ef0f...0752a90. Read the comment docs.

[paurakhsharma]

Looks good to me 👍

[skshetry]

LGTM 👍

[phil-davis]

@haribhandari07 please:

• rebase this PR. Current master should pass much better.
• make backport to stable10

[haribhandari07]

Backport on #35675