debug doctor produces false positive on table names with quotes

[smcvey]

Describe the problem

Create a table with some quotes:

create table defaultdb.public."""MisplacedSchema"".t" (id uuid primary key);

Note that running cockroach debug doctor examine cluster works fine:

$ cockroach debug doctor examine cluster 
Examining 43 descriptors and 44 namespace entries...
Examining 7 jobs...
No problems found!

However, create a debug zip, and then run debug doctor on that:

$ cockroach debug doctor examine zipdir .
Examining 43 descriptors and 44 namespace entries...
  ParentID 100, ParentSchemaID 101: relation "\"MisplacedSchema\".t" (104): expected matching namespace entry, found none
  ParentID 100, ParentSchemaID 101: namespace entry "\"\"\"MisplacedSchema\"\".t\"" (104): no matching name info found in non-dropped relation "\"MisplacedSchema\".t"
Examining 6 jobs...
ERROR: validation failed
Failed running "debug doctor examine zipdir"

It's getting confused on all the various quotes and creating false positives on customers who have chosen to proactively use debug doctor while upgrading.

Jira issue: CRDB-28477

Epic CRDB-27601