Fix center of rotation with rotation_mode='anchor'

Remove ttconv backwards-compatibility code

Remove fallback code for glyph indices

This allows checking that there are no _new_ failures, without
committing the new figures to the repo until the branch is complete.

ci: Preload existing test images from text-overhaul-figures branch

Also, check some expected conditions at parse time instead of somewhere
during use of the data.

ci: Fix image preload with multiple conflicts

Add typing to AFM parser

…names

ENH: Allow fonts to be addressed by any of their SFNT family names

BLD: Update bundled libraqm to 0.10.4

* BLD: Update bundled FreeType to 2.14.3

These releases mostly consist of security fixes.

* BLD: adjust upstream url for freetype to nongnu savanah mirror

Co-authored-by: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>

---------

Co-authored-by: Thomas A Caswell <tcaswell@gmail.com>
Co-authored-by: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>

- Port FreeType symbol visibility patch to 2.14.1
- Add test image preloading to wasm CI workflow
- Temporarily disable testing `test_complex_shaping`, which triggers
  some code path that fails somehow

This test requires a subprocess call, so should be skipped like the
others.

Unfortunately, this was missed in matplotlib#31407.

These tests had previously kept some code or settings to prevent
regenerating the test image, but since they are now going to be
regenerated from the text overhaul, we can remove those.

TST: Cleanup back-compat code in tests touched by text overhaul

Fix FreeType runtime version check

Make it clearer that switches are only over 3 possible fonttypes (1, 3,
42).  In draw_text, the logic is easier to follow if one directly
switches over rcParams['pdf.use14corefonts']; this requires putting the
url handling at the end, which doesn't matter.

)

* TST: Set tests touched by text overhaul to mpl20 style

* TST: Tweak some tests to work better in mpl20 style

Clarify fonttype switch in backend_pdf.

If a backend doesn't implement `draw_text`, then we fall back to this
implementation that draws paths. It was previously missing support for
font features and languages.

This exercises complex shaping, font features, and language support.

TST: Reset tolerances on tests changed by text overhaul

Support font features/language in default RendererBase.draw_text

This includes images changes for the following pull requests / commits:

* [Fix center of rotation with
  rotation_mode='anchor'](matplotlib#29199)
  (c44db77)
* [Remove ttconv backwards-compatibility
  code](matplotlib#30145)
  (8caff88)
* [Remove kerning_factor from
  tests](matplotlib#29816)
  (7b4d725)
* [Set text hinting to
  defaults](matplotlib#29816)
  (8255ae2)
* [Update FreeType to
  2.13.3](matplotlib#29816)
  (89c054d)
* [Implement text shaping with
  libraqm](matplotlib#30000)
  (b0ded3a,
  9813523)
* [Add language parameter to Text
  objects](matplotlib#29794)
  (7ce8eae)
* [Fix auto-sized glyphs with BaKoMa
  fonts](matplotlib#29936)
  (3ba2c13)
* [pdf: Improve text with characters outside embedded font
  limits](matplotlib#30512)
  (b70fb88,
  6cedcf7)
* [Prepare `CharacterTracker` for advanced font
  features](matplotlib#30608)
  (8274e17,
  70dc388,
  df670cf,
  ed5e074)
* [Add font feature API to
  Text](matplotlib#29695)
  (972a688)
* [Fix spacing in r"$\max
  f$"](matplotlib#30715)
  (4a99a83)
* [Implement libraqm for vector
  outputs](matplotlib#30607)
  (bd17cd4)
* [Drop the FT2Font intermediate
  buffer](matplotlib#30059)
  (9d7d7b4)
* [Rasterize dvi files without
  dvipng](matplotlib#30039)
  (7627118)
* [Update bundled FreeType and HarfBuzz
  libraries](matplotlib#30938)
  (a161658,
  9619bcc)
* [Fix positioning of wide mathtext
  accents](matplotlib#31069)
  (c2fa7ba)
* [Refactor RendererAgg.draw_{mathtext,text,tex} to use same base
  algorithm](matplotlib#31085)
  (931bcf3)
* [Implement TeX's fraction and script
  alignment](matplotlib#31046)
  (94ff452,
  4bfa0f9,
  1cd8510)
* [Fix confusion between text height and ascent in metrics
  calculations](matplotlib#31107)
  (60f2310)
* [mathtext: Fetch quad width & axis height from font
  metrics](matplotlib#31110)
  (692df3f,
  383028b)
* [mathtext: add mathnormal and distinguish between normal and italic
  family](matplotlib#31121)
  (a6913f3)
* [ENH: Ignore empty text for
  tightbbox](matplotlib#31285)
  (d772043)
* [Drop axis_artist tickdir image compat, due to text-overhaul
  merge](matplotlib#31281)
  (2057583)
* [text: Use font metrics to determine line
  heights](matplotlib#31291)
  (3ab6a27,
  d961462,
  97f4943)
* [ps/pdf: Override font height metrics to support AFM
  files](matplotlib#31371)
  (e0913d4)
* [TST: Cleanup back-compat code in tests touched by text
  overhaul](matplotlib#31295)
  (7c33379)
* [TST: Set tests touched by text overhaul to mpl20
  style](matplotlib#31300)
  (41c4d8d)