### Summary

When running `ansible-test network-integration`  on  the `devel` branch the inventory file fails to be found.  This problem is being caused because the default inventory path uses `test` instead of `tests`. 
 
https://github.com/ansible/ansible/blob/f4d4391a1f5d4d2b4159d9976216c5861023be2c/test/lib/ansible_test/_internal/cli/compat.py#L472

Although I am only running network-integration tests, it appears that windows integration tests would encounter the same issue.

https://github.com/ansible/ansible/blob/f4d4391a1f5d4d2b4159d9976216c5861023be2c/test/lib/ansible_test/_internal/cli/compat.py#L470 
From what I can tell this was introduced in #75605


### Issue Type

Bug Report

### Component Name

test/lib/ansible_test/_internal/cli/compat.py

### Ansible Version

```console
$ ansible --version
ansible [core 2.13.0.dev0] (devel f4d4391a1f) last updated 2021/10/02 08:11:28 (GMT -500)
  config file = None
  configured module search path = ['/Users/pinkman/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /Users/pinkman/DEV/ansible/lib/ansible
  ansible collection location = /Users/pinkman/.ansible/collections:/usr/share/ansible/collections
  executable location = /Users/pinkman/DEV/ansible/bin/ansible
  python version = 3.9.7 (v3.9.7:1016ef3790, Aug 30 2021, 16:39:15) [Clang 6.0 (clang-600.0.57)]
  jinja version = 3.0.1
  libyaml = True
```


### Configuration

```console
$ ansible-config dump --only-changed
```


### OS / Environment

MacOS

### Steps to Reproduce

<!--- Paste example playbooks or commands between quotes below -->
You can observe this behavior by running networking integration tests with:
```
ansible-test networking-integration
```


### Expected Results

Inventory should be found and network integration tests should be ran against targets.

### Actual Results

```console
ERROR: Inventory not found: /Users/pinkman/DEV/ansible-datapower/ansible_collections/community/datapower/test/integration/inventory.networking
Use --inventory to specify the inventory path.
Use --platform to provision resources and generate an inventory file.
See also inventory template: /Users/pinkman/DEV/ansible/test/lib/ansible_test/config/inventory.networking.template
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
"""Option(s) were specified which do not provide support for the controller and would be ignored because they are irrelevant for the target."""
    def __init__(self, context):
        super().__init__(f'Environment `{context}` does not provide a Python version supported by the controller.')
class OptionsConflictError(ApplicationError):
    """Option(s) were specified which conflict with other options."""
    def __init__(self, first, second):
        super().__init__(f'Options `{" ".join(first)}` cannot be combined with options `{" ".join(second)}`.')
@dataclasses.dataclass(frozen=True)
class LegacyHostOptions:
    """Legacy host options used prior to the availability of separate controller and target host configuration."""
    python: t.Optional[str] = None
    python_interpreter: t.Optional[str] = None
    local: t.Optional[bool] = None
    venv: t.Optional[bool] = None
    venv_system_site_packages: t.Optional[bool] = None
    remote: t.Optional[str] = None
    remote_provider: t.Optional[str] = None
    docker: t.Optional[str] = None
    docker_privileged: t.Optional[bool] = None
    docker_seccomp: t.Optional[str] = None
    docker_memory: t.Optional[int] = None
    windows: t.Optional[t.List[str]] = None
    platform: t.Optional[t.List[str]] = None
    platform_collection: t.Optional[t.List[t.Tuple[str, str]]] = None
    platform_connection: t.Optional[t.List[t.Tuple[str, str]]] = None
    inventory: t.Optional[str] = None
    @staticmethod
    def create(namespace):