fix: replace deref with accessor function

[adwk67]

Description

Part of stackabletech/issues#883

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• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
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Author

• Changes are OpenShift compatible
• CRD changes approved
• CRD documentation for all fields, following the style guide.
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• Integration tests passed (for non trivial changes)
• Changes need to be "offline" compatible
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Reviewer

• Code contains useful comments
• (Integration-)Test cases added
• Changelog updated
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[siegfriedweber]

In my opinion, the container name should always come from the same source, i.e. name():

-        &crate::crd::Container::PasswordFileUpdater.to_string(),
+        crate::crd::Container::PasswordFileUpdater.name().as_ref(),

The comment for the test case container_names_match_display can then be adapted, because Display is not used anymore for log capture:

/// The typed container names returned by `name` must agree with the strum `Display` of
/// `Container`, which the logging configuration uses as the per-container key.

[siegfriedweber]

The comment is not adapted yet:

trino-operator/rust/operator-binary/src/crd/mod.rs

Lines 642 to 643 in fdd3637

	/// The typed container names returned by `name` must agree with the strum `Display` of
	/// `Container`, which the rest of the operator still uses for log capture and container lookups.

Display is not used for log capture anymore.