[Refactor] Standardize Theme naming and remove hardcoded workaround.

[younisdev]

Summary

Currently there's a hardcoded workaround to fix inconsistent theme naming spread across the src/. Specifically Singularity theme registries. Other themes uses simple naming formula dyvix-[component-name]-[theme-name], but Singularity theme is still using an old abstraction which allowed adding aliases for theme.

To complete this (examples using modal component):

• You'll need to do these steps on each components in src/ except table:
  1 - Locate the theme json entry in theme.json and rename the class from dyvix-modal-lens -> dyvix-modal-singularity.
  2 - Locate the theme css class entry in style/theme.css and rename the class from dyvix-modal-lens -> dyvix-modal-singularity.

• After finishing up the refactor process you'll need to edit check-themes.js and remove line 64 to 68 to remove the hardcoded workaround.