Clean up links and xrefs with unnecessary applies_to tags

### Collaboration model

### Point of contact.

**Main contact:** @elastic/docs-tech-leads

### Description

Identify and remove instances where links or xrefs in the docs have 'applies_to' tags, but the target page already displays the relevant applies_to information. This will help simplify reader experience by relying on the destination for context (as discussed in recent Slack and PRs). Focus on places where applies_to is redundant or confusing when attached to inline links.

### Which deployment methods does this change impact?

### Feature differences

### Resources

Consult PRs and commits:
- https://github.com/elastic/docs-content/pull/5039#discussion_r3159300095
- https://github.com/elastic/docs-content/pull/6634/changes
- https://github.com/elastic/docs-content/commit/82f92dd580025851b8ef2a7ab070b89482e319c9
Slack thread context for rationale and previous fixes.

### Serverless release

### What Elastic Stack release is this request related to?

[View original Slack conversation](https://elastic.slack.com/archives/C05PP2LEC1X/p1779381341753069?thread_ts=1779381341.753069&cid=C05PP2LEC1X)