build(cmake): build web-ui target with cmd instead of bash on windows

[ReenigneArcher]

Description

In some cases, the command using bash to build the web-ui would fail, such as:

• Using the web-ui configuration in CLion
• User doesn't have bash installed, for whatever reason

Screenshot

Issues Fixed or Closed

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

Branch Updates

LizardByte requires that branches be up-to-date before merging. This means that after any PR is merged, this branch
must be updated before it can be merged. You must also
Allow edits from maintainers.

• I want maintainers to keep my branch updated

[ReenigneArcher]

@FrogTheFrog FYI

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 6.10%. Comparing base (b4739b0) to head (bff3992).

Additional details and impacted files

@@           Coverage Diff           @@
##           nightly   #2340   +/-   ##
=======================================
  Coverage     6.10%   6.10%           
=======================================
  Files           85      85           
  Lines        18303   18303           
  Branches      8319    8319           
=======================================
  Hits          1118    1118           
- Misses       15374   15376    +2     
+ Partials      1811    1809    -2     

Flag	Coverage Δ
Linux	4.11% <ø> (ø)
Windows	1.51% <ø> (ø)
macOS-12	8.11% <ø> (-0.02%)	⬇️
macOS-13	7.46% <ø> (ø)
macOS-14	7.72% <ø> (ø)

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see 2 files with indirect coverage changes