Function breakpoint matching requires unintuitive wildcard

Dealing with breakpoints should be improved. Currently:

- `break in entrypoint` does not work.
- `break in *entrypoint` works because real name is namespaced:
```
::"root_ns:root@1.0.0"::fibonacci::entrypoint
```
- Expected: unqualified function names should match suffixes by default.

Look at the breakpoint command parsing and matching logic in the debugger's source code, likely in a module handling commands or breakpoints. The function names are fully qualified with namespaces like `::"root_ns:root@1.0.0"::fibonacci::entrypoint`. The fix involves adjusting the matching logic to allow unqualified function names (like `entrypoint`) to match suffixes of the fully qualified name. Start by finding where breakpoints are set and matched, then modify the matching algorithm. Test by setting a breakpoint with `break in entrypoint` on a sample program.

Written by the indexing model from the issue text.