[Bug]: “...is a directory; dependency checking of directories is unsound” warning

### What happened?

````
WARNING: /home/ubuntu/.cache/bazel/_bazel_ubuntu/0b37e5958ef8909453aa6cc50b6ee420/external/aspect_rules_ts~~ext~npm_typescript/BUILD.bazel:32:17: input 'package' to @@aspect_rules_ts~~ext~npm_typescript//:.aspect_rules_js/node_modules/typescript is a directory; dependency checking of directories is unsound
````

This looks very similar to https://github.com/aspect-build/rules_js/issues/1408 over in rules_js, so I'm not going to put too much into this bug report unless asked to.

### Version

Development (host) and target OS/architectures: Ubuntu running under Docker, ARM64 and x86_64

Output of `bazel --version`:
````
Bazelisk version: v1.15.0
INFO: Invocation ID: 74094144-8cc1-4545-90d6-009778763704
Build label: 7.1.1
Build target: @@//src/main/java/com/google/devtools/build/lib/bazel:BazelServer
Build time: Thu Mar 21 18:08:02 2024 (1711044482)
Build timestamp: 1711044482
Build timestamp as int: 1711044482
````

Version of the Aspect rules, or other relevant rules from your
`WORKSPACE` or `MODULE.bazel` file:
````
bazel_dep(name = "aspect_bazel_lib", version = "2.7.0")
bazel_dep(name = "aspect_rules_js", version = "1.41.0")
bazel_dep(name = "aspect_rules_jest", version = "0.20.0")
bazel_dep(name = "aspect_rules_lint", version = "0.18.0")
bazel_dep(name = "aspect_rules_py", version = "0.7.1")
bazel_dep(name = "aspect_rules_swc", version = "1.2.2")
bazel_dep(name = "aspect_rules_ts", version = "2.2.0")
bazel_dep(name = "aspect_rules_webpack", version = "0.14.0")
bazel_dep(name = "buildifier_prebuilt", version = "6.4.0")
bazel_dep(name = "platforms", version = "0.0.9")
bazel_dep(name = "rules_multirun", version = "0.9.0")
bazel_dep(name = "rules_multitool", version = "0.4.0")
bazel_dep(name = "rules_nodejs", version = "6.1.0")
bazel_dep(name = "rules_oci", version = "1.7.5")
bazel_dep(name = "rules_python", version = "0.31.0")
bazel_dep(name = "rules_shellcheck", version = "0.3.3")
````

Language(s) and/or frameworks involved:
TypeScript

### How to reproduce

_No response_

### Any other information?

_No response_

No reproduction steps or repository test are provided. Start with the warning at external/.../BUILD.bazel:32:17, compare it with rules_js issue 1408, and use the listed Bazel and Aspect rules versions to establish a reproducible case. Done means the unsound directory-dependency warning is addressed or its expected behavior is documented with regression coverage.

Written by the indexing model from the issue text.