fix: Node 22 compatibility for source maps and import assertions - #5503

Node 22 sets its own internal Error.prepareStackTrace handler (ErrorPrepareStackTrace) before any user code runs, which broke CoffeeScript in three ways.

register.js saw a truthy Error.prepareStackTrace and skipped calling patchStackTrace(), so CoffeeScript's source-map translator was never installed. Stack traces reported raw JS line numbers instead of original CoffeeScript line numbers, breaking tests #4418 and #4558.

The dynamic import() assert: { type: 'json' } syntax was removed in Node 22 with ERR_IMPORT_ATTRIBUTE_MISSING. Replaced with the current with: { type: 'json' } syntax in test/import_assertions.coffee.

The test "requiring 'CoffeeScript' doesn't change Error.prepareStackTrace" expected Error.prepareStackTrace === undefined in a fresh Node process, which is no longer true on Node 22 since Node pre sets it internally. Updated the assertion to check that requiring coffeescript.js leaves it unchanged, which is the correct invariant.

src/register.coffee and lib/coffeescript/register.js are updated to detect and ignore Node's own internal handler so patchStackTrace() installs correctly. test/import_assertions.coffee replaces assert: with with: in two dynamic import() calls. test/sourcemap.coffee checks that prepareStackTrace is unchanged rather than undefined.

Test result(Before):

  #4418: stack traces for compiled files reference the correct line number
  AssertionError [ERR_ASSERTION]: Expected 7 to equal 3

  #4418: stack traces for compiled strings reference the correct line number
  AssertionError [ERR_ASSERTION]: Expected 7 to equal 3

  #4558: compiling a string inside a script doesn't screw up stack trace line number
  TypeError: Cannot read properties of null (reading '1')

  dynamic import assertion
  TypeError [ERR_IMPORT_ATTRIBUTE_MISSING]: Module "data:application/json,{"ofLife":42}" needs an import attribute of "type: json"

  assert keyword
  TypeError [ERR_IMPORT_ATTRIBUTE_MISSING]: Module "data:application/json,{"thatIAm":42}" needs an import attribute of "type: json"

failed 5 and passed 1456 tests in 8.09 seconds

Test result (After):

$npm test

> [email protected] test
> node ./bin/cake test

Browserslist: caniuse-lite is outdated. Please run:
  npx browserslist@latest --update-db
  Why you should do it regularly: https://github.com/browserslist/browserslist#browsers-data-updating
passed 1473 tests in 8.33 seconds