test: fix repl-function-redefinition-edge-case

`test/known_issues/test-repl-function-redefinition-edge-case.js` had
been introduced as a part of #7624
but the meat of the test became fixed in
007386e. Despite that, the test
continued to fail since it was broken itself: there was a missing colon
in the expected output.

This commit adds the missing colon and moves the test from
`test/known_issues` to `test/parallel`.

PR-URL: #11772
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>

test/known_issues/test-repl-function-redefinition-edge-case.js → test/parallel/test-repl-function-definition-edge-case.js

@@ -13,7 +13,7 @@ r.input.emit('data', 'function a() { return 42; } (1)\n');
 r.input.emit('data', 'a\n');
 r.input.emit('data', '.exit');
 
-const expected = '1\n[Function a]\n';
+const expected = '1\n[Function: a]\n';
 const got = r.output.accumulator.join('');
 assert.strictEqual(got, expected);