feat(sample-data): add new wind sample dataset

[sanderson]

• Adds a new EU wind sample data set
• Adds new sample-data-dist.md for Cloud Dedicated and Clustered sample data pages
• Corrects v3 write API instructions for writing sample data to for Core and Enterprise
• Adds influxctl write instructions for writing sample data to Cloud Dedicated and Clustered
• Fixes a JS bug that caused the URL selector button to be appended to a code block twice
• Fixed JS linting issues

---

• Rebased/mergeable

[Copilot]

Pull Request Overview

This PR adds a new European Union wind sample dataset to the InfluxDB v3 documentation and improves the codebase structure. The changes include updating v3 write API examples to use proper HTTP methods and headers, consolidating documentation using shared content files, and fixing JavaScript issues with URL selector buttons.

Key Changes

• Adds EU wind sample dataset with hierarchical geographic tags (country, county, city)
• Updates API examples with proper HTTP methods and standardized headers across all endpoints
• Refactors shared content to reduce duplication between Cloud Dedicated and Clustered documentation

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
content/shared/influxdb3-sample-data/sample-data.md	Adds EU wind dataset and standardizes v3 API examples with proper HTTP methods
content/shared/influxdb3-sample-data/sample-data-dist.md	New shared content file for Cloud Dedicated/Clustered with influxctl CLI examples
content/influxdb3/clustered/reference/sample-data.md	Converts to use shared content source
content/influxdb3/cloud-dedicated/reference/sample-data.md	Converts to use shared content source
content/influxdb3/cloud-serverless/reference/sample-data.md	Adds EU wind dataset section
assets/styles/layouts/article/_buttons.scss	Adjusts URL selector button positioning
assets/js/influxdb-url.js	Fixes URL selector duplication bug and improves code formatting

[jstirnaman]

Looks great! Just some comment cleanup and addition (stuff I forget and then have to lookup).

[jstirnaman]

Suggested change

	// Retrieve the previously selected URLs from the from the urls local storage
	// Retrieve the previously selected URLs from the urls local storage

[jstirnaman]

Suggested change

	function validateUrl(url) {
	/** Match 3 possible types of hosts:
	* Named host = (unreserved | pct-encoded | sub-delims)+
	* IPv6 host = \[([a-f0-9:.]+)\]
	* IPvFuture host = \[v[a-f0-9][a-z0-9\-._~%!$&'()*+,;=:]+\]
	* Port = [0-9]+
	*/