test: use heapdump test for SecureContext memory tracking

[mertcanaltin]

Replace cctest with a heap snapshot test for SecureContext memory tracking.

Refs: #59051

@joyeecheung #59051 (comment)

[mertcanaltin]

hey @joyeecheung I applied your last sugesstions (#62689 (comment), #62689 (comment))

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.23%. Comparing base (4ee2117) to head (5438c86).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #64344      +/-   ##
==========================================
- Coverage   90.23%   90.23%   -0.01%     
==========================================
  Files         741      741              
  Lines      240979   240979              
  Branches    45401    45399       -2     
==========================================
- Hits       217449   217440       -9     
+ Misses      15112    15111       -1     
- Partials     8418     8428      +10     

see 24 files with indirect coverage changes

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