### Summary

I'm trying to optimise my builds by avoiding unnecessary downloads.
ansible-galaxy install always downloads the latest version even if the existing collection already meets the requirements. This behaviour appears to be consistent with the documentation (https://docs.ansible.com/ansible/latest/galaxy/user_guide.html#installing-an-older-version-of-a-collection), but why has it been implemented to always download ?


e.g. I have
```
# /usr/local/lib/python3.8/site-packages/ansible_collections
Collection                    Version
----------------------------- -------
amazon.aws                    3.5.0  
...
```
and requirements.yml
```
---
collections:
  - name: amazon.aws
    version: '>=1.5.0'
```
if I run ansible-galaxy install -r requirements.yml I get amazon.aws 6.1.0 installed, even though 3.5.0 already meets my 1.5.0 requirement. I would expect nothing to happen because my requirements were already met.

### Issue Type

Feature Idea

### Component Name

ansible galaxy

### Additional Information

People who like the existing behaviour could perhaps use the recently added --upgrade switch to continue to get the upgrade to the lastest version.

### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
os.path.join(b_collection_path, b'MANIFEST.json'),
        os.path.join(b_collection_path, b'FILES.json'),
    }
    
    for manifest_data in file_manifest['files']:
        name = manifest_data['name']
        if manifest_data['ftype'] == 'file':
            collection_files.add(
                os.path.join(b_collection_path, to_bytes(name, errors='surrogate_or_strict'))
            )
            expected_hash = manifest_data['chksum_%s' % manifest_data['chksum_type']]
            _verify_file_hash(b_collection_path, name, expected_hash, modified_content)
        if manifest_data['ftype'] == 'dir':
            collection_dirs.add(
                os.path.join(b_collection_path, to_bytes(name, errors='surrogate_or_strict'))
            )
    
    for root, dirs, files in os.walk(b_collection_path):
        for name in files:
            full_path = os.path.join(root, name)
            path = to_text(full_path[len(b_collection_path) + 1::], errors='surrogate_or_strict')
            if full_path not in collection_files:
                modified_content.append(
                    ModifiedContent(filename=path, expected='the file does not exist', installed='the file exists')
                )
        for name in dirs:
            full_path = os.path.join(root, name)
            path = to_text(full_path[len(b_collection_path) + 1::], errors='surrogate_or_strict')
            if full_path not in collection_dirs:
                modified_content.append(