feat: contact us modal component

[alexbarnsley]

Summary

• Also Removes overflow for modal - not needed right now since the min-height was removed too

Tests will fail as it's waiting on changes in #2074

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #2080 into 3.0-react will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           3.0-react     #2080   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
===========================================
  Files             45        46    +1     
  Lines            298       303    +5     
  Branches          49        49           
===========================================
+ Hits             298       303    +5     

Impacted Files	Coverage Δ
src/app/components/Modal/Modal.tsx	100.00% <ø> (ø)
src/app/components/Address/Address.tsx	100.00% <100.00%> (ø)
src/app/components/Address/utils.ts	100.00% <100.00%> (ø)
...rc/domains/help/components/ContactUs/ContactUs.tsx	100.00% <100.00%> (ø)

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