Bug fixes for RTL text and dx/dy - #1145

* Update Windows release runner to `windows-latest` (linebender#1113)

* c-api: add missing SVGZ error enum (linebender#1122)

Add the missing `RESVG_ERROR_SVGZ_UNSUPPORTED` enum value to `resvg.h`
so the C API enum values remain in sync with the Rust definition and
subsequent error codes are not shifted.

While we're here, simplify this enum description (as the `svgz` feature
is enabled by default) and add the corresponding Qt error string in
`ResvgQt.h`.

Fixes: linebender#1112.

---

Verified against wasm-vips with this sed substitution:

https://github.com/kleisauke/wasm-vips/blob/8f38cbbb70d7536bd0f3d70e308c501cbe4f2e22/build.sh#L442-L443

* Add regression test for `fr` resolution in referenced radial gradients (linebender#1123)

As requested in linebender#1098

* fix(usvg): use the viewport as the bbox of a sliced <image> (linebender#1077)

* Add aarch64 release artifacts for Linux and Windows (linebender#1132)

Adds native aarch64 builds to the release workflow.

- **Linux aarch64** on the `ubuntu-24.04-arm` runner →
`resvg-linux-aarch64.tar.gz`, `usvg-linux-aarch64.tar.gz`
- **Windows aarch64** on the `windows-11-arm` runner →
`resvg-win-aarch64.zip`, `usvg-win-aarch64.zip`

Updates the workflow's actions, two of which still declared the
end-of-life node12 runtime:

- `alexellis/upload-assets` 0.2.2 → 0.5.0 (node12 → node24)
- `battila7/get-version-action` removed — unmaintained since 2021 and
node12; the workflow only triggers on `v*` tags, so the version is just
`${GITHUB_REF_NAME#v}`
- `actions/checkout` v2 → v7, `softprops/action-gh-release` v2 → v3

Renames the existing job to explicitly say `x86_64` and differentiate
`aarch64`

Closes linebender#968

* Convert CI release job to use a Matrix (linebender#1133)

Some CI cleanup suggested by LLM review of
linebender#1132. Has been verified as
working on my fork.

## Changes made

- Collapse the six per-platform release-* jobs into one release-binaries
matrix job over {linux, win, macos} × {x86_64, aarch64}. Asset names are
derived from the matrix (`resvg-$SUFFIX.{tar.gz,zip}`). This renamea
`resvg-win64.zip` / `usvg-win64.zip` to `resvg-win-x86_64.zip` /
`usvg-win-x86_64.zip` to match the linux-* / macos-* / win-aarch64
naming. This is a breaking change for anyone scripting downloads of the
old names.
- Drop the crates/c-api release builds (and the ilammy/msvc-dev-cmd
step): their output was never collected or uploaded, so they only cost
CI time.
- Split the vendored sources archive and the Windows Explorer
thumbnailer into their own jobs
- Upload assets with `softprops/action-gh-release@v3` files: (already
used to create the release) instead of the third-party
`alexellis/upload-assets`.

* tests: load test fonts in a deterministic order (linebender#1136)

`fontdb::load_fonts_dir` walks the directory with `std::fs::read_dir`,
which outputs entries in filesystem order. That order is not stable
across machines, and the test harness depends on it.

Replace `load_fonts_dir` with an explicit sorted list so order is
identical everywhere. The whole suite passes unchanged, so no stored
reference image depended on the previous ordering.

* fix(usvg): inherit `gradientTransform` and `patternTransform` via `href` (linebender#1135)

* Inherit `dominant-baseline` into nested `<tspan>` elements (linebender#1086)

* Fix bug in filter chains with different filter regions (linebender#1144)

* Add support for `plus-lighter` and `lighter` (linebender#1142)

* Apply root SVG transform after the `viewBox` mapping (linebender#1085)

* Add `--query-bbox` to CLI (linebender#1050)

* Support floating point viewbox in resvg binary (linebender#875)

* Fix `feMorphology` kernel size and radius rounding (linebender#1120)

* Bug fixes for RTL text and `dx`/`dy` (linebender#1145)

* Fix font fallback logging and avoid repeated lookups (linebender#1154)

* Fix rendering of filters with skews and rotations (linebender#1155)

* Fix marker viewport clipping with preserveAspectRatio (linebender#1163)

* Resolve paint servers in masks, patterns and `feImage` before caching (linebender#1164)

* Optimize clipped layers (linebender#1158)

* Remove reference to nonexistent check.py from tests README (linebender#1181)

* Install ResvgQt.h with cargo-c (linebender#1182)

* Prepare v0.49.0 release (linebender#1183)

* fix: Windowsサムネイルの依存版を0.49へ揃える Refs #1

---------

Co-authored-by: TheBestWebsite <164817940+TheBestWebsite@users.noreply.github.com>
Co-authored-by: Kleis Auke Wolthuizen <github@kleisauke.nl>
Co-authored-by: Tim Voßhenrich <94936637+T1mVo@users.noreply.github.com>
Co-authored-by: Stefano <stefano.d@posteo.de>
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