Adds metamask check in grant form

[SaptakS]

Description

Adds metamask check in grant creation form with web3 version check

Checklist

• linter status: 100% pass
• changes don't break existing behavior
• commit message follows commit guidelines

Affected core subsystem(s)

Testing

Refers/Fixes

Refs: #2444

[codecov]

Codecov Report

Merging #2487 into grants will decrease coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           grants    #2487      +/-   ##
==========================================
- Coverage   29.72%   29.67%   -0.05%     
==========================================
  Files         154      154              
  Lines       12113    12113              
  Branches     1618     1618              
==========================================
- Hits         3601     3595       -6     
- Misses       8394     8400       +6     
  Partials      118      118

Impacted Files	Coverage Δ
app/dashboard/embed.py	28.16% <0%> (-3.45%)	⬇️

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