fix(plugin-css): Add styles when only token is used to style a element

[JayaKrishnaNamburu]

Fixes #524

[codecov]

Codecov Report

Merging #525 (c5da6f4) into development (87fdeb2) will increase coverage by 0.02%.
The diff coverage is 25.00%.

@@               Coverage Diff               @@
##           development     #525      +/-   ##
===============================================
+ Coverage        76.31%   76.33%   +0.02%     
===============================================
  Files              156      156              
  Lines             5687     5684       -3     
  Branches          1205     1203       -2     
===============================================
- Hits              4340     4339       -1     
+ Misses            1288     1286       -2     
  Partials            59       59              

Impacted Files	Coverage Δ
packages/teleport-plugin-css/src/index.ts	84.61% <25.00%> (+1.43%)	⬆️

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