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 90.12%. Comparing base (fd5b135) to head (342ac8e).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #64344   +/-   ##
=======================================
  Coverage   90.12%   90.12%           
=======================================
  Files         752      752           
  Lines      252325   252325           
  Branches    47456    47448    -8     
=======================================
+ Hits       227407   227416    +9     
- Misses      16217    16222    +5     
+ Partials     8701     8687   -14     

see 37 files with indirect coverage changes

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