Added documentation for showall option in Limitbox form field

[shaswata-26]

User description

This PR updates the Limitbox form field documentation to include the new showall option.

1. Added explanation of the showall attribute (true to display "ALL" in the dropdown, false to hide it).
2. Updated the options list in the docs.
3. Helps clarify usage for developers using LimitboxField.php.

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PR Type

Documentation

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Description

• Added documentation for showall option in Limitbox form field

• Updated example with showall="true" attribute

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Diagram Walkthrough

flowchart LR
  A["Limitbox Field"] --> B["showall option"]
  B --> C["Controls 'All' option visibility"]
  C --> D["Updated documentation"]

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File Walkthrough

	Relevant files
Documentation	limitbox.md Document showall option for Limitbox field                              docs/general-concepts/forms-fields/standard-fields/limitbox.md Added showall option documentation with true/false values Updated example code to include showall="true" attribute Added explanation of "All" option visibility control +5/-0

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[qodo-code-review]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Consistency Verify that the default behavior described for showall matches the actual default in LimitboxField.php, including exact capitalization of the "All" label and localization. - **showall** (optional) controls whether an "All" option is displayed in the dropdown list. - **true**: shows the "All" option - **false**: hides the "All" option (default) Example Accuracy Ensure the example attribute name and value type (showall="true") are correct per XML schema and that other examples in the docs are updated consistently. showall="true" onchange="this.form.submit();" /> </fields> </details> </td></tr> </table>

[qodo-code-review]

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[HLeithner]

Is this new or already on old joomla versions?