fix: Removed currency symbol filter

[mrsaicharan1]

Fixes #6018

Short description of what this resolves:

Removes the currency symbol template filter which was not able to render most of the currency symbols due to a render issue with PISA

Changes proposed in this pull request:

• Replaced currency symbols with 3-letter conventions to fix the render issue

Checklist

• I have read the Contribution & Best practices Guide and my PR follows them.
• My branch is up-to-date with the Upstream development branch.
• The unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

• All the functions created/modified in this PR contain relevant docstrings.

[codecov]

Codecov Report

Merging #6146 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development    #6146   +/-   ##
============================================
  Coverage        66.41%   66.41%           
============================================
  Files              286      286           
  Lines            14380    14380           
============================================
  Hits              9550     9550           
  Misses            4830     4830

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[mrsaicharan1]

@uds5501 @shreyanshdwivedi @iamareebjamal Please review