* TextFlow: fix inline `<code>` spans sagging below the baseline
finish_row_center centered every walk by its own height, so a code run's
shorter walk got a larger downward shift than the surrounding prose under
`RowAlign.Center`. That undid TextFlow's baseline_shift: inline `<code>`
spans sat a few px below the line's baseline, and their descenders poked
out of the bottom of the code box.
* FinishedWalk now carries an optional `align_height` that text runs set
to their line style's height, so every text run on a row receives the
same centering shift and stays on the baseline. Also fixes sub- and
superscripts drifting under `RowAlign.Center`.
* The per-style metrics probe now caches descenders too, since we need
the full line height (ascender + descender) to compute `align_height`.
* Html/Markdown: make the fixed/code font size scale configurable
Replaces the hardcoded 0.85 `FIXED_FONT_SIZE_SCALE` consts with a
`fixed_font_size_scale` live property on TextFlow (default 0.85), so
apps can tune how much smaller `<code>` text renders than the prose.
* cargo_makepad: don't include `resources/android`/`ios` on every platform
Runtime asset bundling copied each crate's entire `resources/` tree into
every package, so `resources/android/` (manifest template, launcher icon
mipmaps) shipped as dead weight inside APK assets and Apple bundles, and
any `resources/ios/` content would ship on Android too. Those dirs are
platform-specific, so only their own platform should bundle them.
* Add `cp_all_skip_top()` to `makepad-shell`: like `cp_all()`, but skips
top-level entries by exact name.
* Android (APK and AAB staging): bundle `resources/android/` minus the
packaging inputs `AndroidManifest.xml.template` and `res/`, which
already reach the package via the generated manifest and the aapt
`res/` pipeline; skip `resources/ios/` entirely.
* Apple bundles: skip `resources/android/`, keep `resources/ios/`.
