ui: index view confused when index contains special whitespaces

**Describe the problem**

When an _index_ name contains special whitespace characters _which are allowed in PostgreSQL_, the index view in the DB console breaks down.

**To Reproduce**

1. run `cockroach demo --empty`
2. type in `CREATE TABLE t(x INT); CREATE INDEX "a`, press enter key
3. complete on a 2nd line: ` b" ON t(x);`
4. navigate to db console -> databases -> defaultdb -> table `t` -> index `a b`

See:
- the index definition is empty
- the index details are missing

**Expected behavior**

The db console should support special whitespace (including `\n`, `\f`, `\v`, `\t`) in index names without problem.

**Additional data / screenshots**

**Environment:**
- `master` branch towards v23.1

Epic: CRDB-20388

Jira issue: CRDB-22837