revert(svg): use %s instead of %.3F in transform formatting

[vlakoff]

This reverts #100 which replaced %s with %.3F.

As I elaborated in this comment, PHP ≥ 8.0 formatting is locale-independent, so %.3F is no longer necessary and introduced trailing zeroes in scale/translate attributes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.81%. Comparing base (c2fe9b3) to head (044d331).

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #218   +/-   ##
=========================================
  Coverage     70.81%   70.81%           
  Complexity      994      994           
=========================================
  Files            49       49           
  Lines          3169     3169           
=========================================
  Hits           2244     2244           
  Misses          925      925           

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[DASPRiD]

Mind adding a test for e.g. the SVG renderer which does calls setlocale() to verify this; just in case PHP decides to break this again :)

[vlakoff]

Mmm… as always with writing tests, I struggle to find motivation for this one.

Code snippets:

Method A:

public function testSomethingWithLocale()
{
    $originalLocale = setlocale(LC_ALL, 0);

    try {
        $locale = (PHP_OS_FAMILY === 'Windows') ? 'French_France.1252' : 'fr_FR.UTF-8';
        $result = setlocale(LC_ALL, $locale);
        if ($result === false) {
            $this->markTestSkipped("Locale {$locale} is not available on this system.");
        }

        // ... run your test code here ...

    } finally {
        // always executed, even if test fails or throws
        setlocale(LC_ALL, $originalLocale);
    }
}

Method B:

class LocaleTest extends TestCase
{
    private $originalLocale;

    #[Before]
    public function switchLocale()
    {
        $this->originalLocale = setlocale(LC_ALL, 0);

        $locale = (PHP_OS_FAMILY === 'Windows') ? 'French_France.1252' : 'fr_FR.UTF-8';
        $result = setlocale(LC_ALL, $locale);
        if ($result === false) {
            $this->markTestSkipped("Locale {$locale} is not available on this system.");
        }
    }

    #[After]
    public function restoreLocale()
    {
        setlocale(LC_ALL, $this->originalLocale);
    }

    public function testLocalizedBehavior()
    {
        // ... test code that depends on locale ...
    }
}

edit: I've added a check to ensure that setlocale(LC_ALL, 'fr_FR.UTF-8') executes successfully; otherwise, the test is skipped.

edit 2: fr_FR.UTF-8 wasn't working on Windows, so I added the Windows-specific French_France.1252 for it.