chore: avoid panic on invalid directory filters (#6955)
### Description
We had an unwrap on trying to parse user input as a glob. This PR just
changes that to a better error message.
Current behavior results in a panic:
```
[0 olszewski@chriss-mbp] /Users/olszewski/code/vercel/turborepo $ turbo run dev --filter={cli,docs}
Oops! Turbo has crashed.
A report has been written to /tmp/report-9c083809-41f9-43bb-86eb-6e7657e0b174.toml
Please open an issue at https://github.com/vercel/turbo/issues/new/choose and include this file
...
explanation = """
file 'crates/turborepo-lib/src/run/scope/filter.rs' at line 414
"""
cause = "called `Result::unwrap()` on an `Err` value: BuildError { kind: Parse(ParseError { expression: \"cli,docs\", locations: [ErrorEntry { fragment: \",web\", location: 5, kind: Nom(Eof) }] }) }"
method = "Panic"
backtrace = """
0: 0xf4ce22 - <turborepo_lib[adfb7611b6a9cc2e]::run::scope::filter::FilterResolver<turborepo_lib[adfb7611b6a9cc2e]::run::scope::change_detector::SCMChangeDetector>>::filter_graph_with_selectors
```
### Testing Instructions
Verify that we no longer panic on a bad directory:
```
[0 olszewski@chriss-mbp] /Users/olszewski/code/vercel/turborepo $ turbo_dev build --filter='{cli,docs}'
ERROR run failed: 'Invalid directory filter 'cli,docs': failed to parse glob expression
```
Closes TURBO-2010
