MudTablePager: Add thousands separator for all_items

[RafBorrelli]

Description

Added thousands separator for all_items of MudTablePager

How Has This Been Tested?

It has only been tested visually.

Type of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation (fix or improvement to the website or code docs)

Example

Note: the string interpolation $"{filteredItemsCount:N0}" uses CultureInfo.CurrentCulture by default.
In this environment, the culture is set to it-IT (Italian), so the thousands separator is a dot (.).
For example, 88088 will be formatted as 88.088.
The output may vary depending on the culture settings of the environment where the application is running.

Before

After

Checklist

• The PR is submitted to the correct branch (dev).
• My code follows the code style of this project.
• I've added relevant tests.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.11%. Comparing base (6d458b8) to head (5002957).
Report is 13 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #11371      +/-   ##
==========================================
- Coverage   91.11%   91.11%   -0.01%     
==========================================
  Files         465      465              
  Lines       14402    14402              
  Branches     2785     2785              
==========================================
- Hits        13123    13122       -1     
  Misses        643      643              
- Partials      636      637       +1     

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[Copilot]

Pull Request Overview

This PR adds a thousands separator for the "all_items" value in MudTablePager to improve number readability.

• Updated the string interpolation for the all_items value in the Info property.
• Adjusted the Localizer call to use the formatted number with a thousands separator.

Comments suppressed due to low confidence (1)

src/MudBlazor/Components/Table/MudTablePager.razor.cs:125

• The thousands separator implementation appears correct, but it's only visually tested. Consider adding unit tests to verify the formatting behavior across different culture settings.

.Replace("{all_items}", $"{filteredItemsCount:N0}");

[danielchalmers]

LGTM. An invariant test might help