[packages] `make-deps-path-based` should include everything in a federated plugin

Currently the tool logic for `make-deps-path-based` has logic that was intended to solve the issue of transitive dependencies by having `foo/example` get all the same overrides as `foo`. That's usually enough, but not always; in particular, cases where some unrelated plugin's example depends on `foo`, but the plugin itself doesn't, then the example gets only `foo` overridden but none of `foo`'s sub-dependencies, which causes CI failures. See https://github.com/flutter/packages/pull/9212 for an example.

The tool should have additional logic that anything depending on `foo*` gets *all* overrides in the `foo*` conceptual plugin group, to avoid missed cases.

(In general the changes to other packages aren't actually necessary at the stage where this causes problems, but having the tool generate partial changes that don't work just causes confusion.)