test: make test-tls-external-accessor agnostic

Remove reliance on V8-specific error messages in
test/parallel/test-tls-external-accessor.js.

Check that the error is a `TypeError`.

The test should now be successful without modification using ChakraCore.

Backport-PR-URL: #20456
PR-URL: #16272
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Refael Ackermann <[email protected]>
Reviewed-By: Yuta Hiroto <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Tobias Nießen <[email protected]>

Author: Trott

test/parallel/test-tls-external-accessor.js

@@ -11,12 +11,12 @@ const tls = require('tls');
 {
   const pctx = tls.createSecureContext().context;
   const cctx = Object.create(pctx);
-  assert.throws(() => cctx._external, /incompatible receiver/);
+  assert.throws(() => cctx._external, TypeError);
   pctx._external;
 }
 {
   const pctx = tls.createSecurePair().credentials.context;
   const cctx = Object.create(pctx);
-  assert.throws(() => cctx._external, /incompatible receiver/);
+  assert.throws(() => cctx._external, TypeError);
   pctx._external;
 }