https://github.com/bazelbuild/bazel/issues/4057 has reappeared with Bazel 7

### Description of the bug:

Building a `cc_library` without symbols now prints a warning (due to the switch to the Unix CC toolchain in Bazel 7 on macOS).

### Which category does this issue belong to?

C++/Objective-C Rules

### What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

Same as https://github.com/bazelbuild/bazel/issues/4057: create a trivial workspace with an empty `empty.c` and a BUILD file like:

```python
cc_library(
name = "empty",
srcs = ["empty.c"],
linkstatic = 1,
)
```

Then, `bazel build //:empty` will print a warning like

```
INFO: From Linking libempty.a:
warning: /Library/Developer/CommandLineTools/usr/bin/libtool: archive library: bazel-out/darwin_arm64-fastbuild/bin/libempty.a the table of contents is empty (no object file members in the library define global symbols)
```

This doesn't happen in Bazel 6 (which uses the Xcode toolchain by default, where this issue has been fixed by https://github.com/bazelbuild/bazel/issues/4057 and/or https://github.com/bazelbuild/bazel/issues/5981).

### Which operating system are you running Bazel on?

macOS 14.2.1 (23C71)

### What is the output of `bazel info release`?

release 7.0.1

### If `bazel info release` returns `development version` or `(@non-git)`, tell us how you built Bazel.

N/A

### What's the output of `git remote get-url origin; git rev-parse master; git rev-parse HEAD` ?

```text
N/A
```

### Is this a regression? If yes, please try to identify the Bazel commit where the bug was introduced.

Technically a regression (no warning in Bazel 6), though this probably was always present in the Unix toolchain.

### Have you found anything relevant by searching the web?

Same as https://github.com/bazelbuild/bazel/issues/4057 and https://github.com/bazelbuild/bazel/issues/5981, just for the Unix toolchain instead of the Xcode one.

### Any other information, logs, or outputs that you want to share?

_No response_

Start with the Unix CC toolchain and reproduce the issue using the empty.c and BUILD example with Bazel 7.0.1 on macOS. Compare the archive-linking behavior with Bazel 6 and the earlier Xcode-toolchain issues 4057 and 5981. Done means building the empty cc_library no longer prints the empty-table-of-contents warning.

Written by the indexing model from the issue text.