build(vite): fix assets directories with symlinks present

[cathyjf]

Description

This commit addresses a situation where the user clones the Sunshine
directory in a location such that an ancestor of the repository is a
symlink. For example, imagine that the ~/git directory is a symlink
to the ~/Documents/git directory. Further imagine that the user clones
Sunshine into ~/git/Sunshine. In this setup, attempting to build
the web-ui will fail with a series of incredibly cryptic error messages,
which look like this:

RollupError: The "fileName" or "name" properties of emitted chunks
and assets must be strings that are neither absolute nor relative
paths, received "../../../../../../Documents/git/Sunshine/src_assets/common/assets/web/password.html".

This seems to occur because vite isn't aware that Documents/git and
git are actually the same directory as each other.

To fix the problem, this commit resolves the symlinks (if any) in
vite.config.js so that vite will only have to deal with one
canonical path, rather than two. This prevents the error when building.

Screenshot

N/A

Issues Fixed or Closed

N/A

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 (N/A)

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 11.05%. Comparing base (03253fc) to head (bffa5cf).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3359   +/-   ##
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  Coverage   11.05%   11.05%           
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  Files          99       99           
  Lines       17231    17231           
  Branches     8034     8034           
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  Hits         1905     1905           
  Misses      12641    12641           
  Partials     2685     2685           

Flag	Coverage Δ
Linux	8.35% <ø> (ø)
Windows	5.23% <ø> (ø)
macOS-13	13.61% <ø> (ø)
macOS-14	12.58% <ø> (ø)

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