feat: use yoga::StyleLength instead of yoga::value on 77+ (#2582)

# Summary

With react-native@0.77 `yoga::value` is no longer available and we
should use `yoga::StyleLength`.

## Test Plan

App should build again on 0.77.rc-3

scripts/rnsvg_utils.rb

@@ -0,0 +1,38 @@
+# Copied from Reanimated https://github.com/software-mansion/react-native-reanimated/blob/c6d68151644056476518241b0087b1ed900b39b6/packages/react-native-reanimated/scripts/reanimated_utils.rb
+def rnsvg_try_to_parse_react_native_package_json(node_modules_dir)
+  react_native_package_json_path = File.join(node_modules_dir, 'react-native/package.json')
+  if !File.exist?(react_native_package_json_path)
+    return nil
+  end
+  return JSON.parse(File.read(react_native_package_json_path))
+end
+
+def rnsvg_find_config()
+  result = {
+    :react_native_version => nil,
+    :react_native_minor_version => nil,
+    :react_native_node_modules_dir => nil,
+  }
+
+  react_native_node_modules_dir = File.join(File.dirname(`cd "#{Pod::Config.instance.installation_root.to_s}" && node --print "require.resolve('react-native/package.json')"`), '..')
+  react_native_json = rnsvg_try_to_parse_react_native_package_json(react_native_node_modules_dir)
+
+  if react_native_json == nil
+    # user configuration, just in case
+    node_modules_dir = ENV["REACT_NATIVE_NODE_MODULES_DIR"]
+    react_native_json = rnsvg_try_to_parse_react_native_package_json(node_modules_dir)
+  end
+
+  if react_native_json == nil
+    raise '[RNSVG] Unable to recognize your `react-native` version. Please set environmental variable with `react-native` location: `export REACT_NATIVE_NODE_MODULES_DIR="<path to react-native>" && pod install`.'
+  end
+
+  result[:react_native_version] = react_native_json['version']
+  result[:react_native_minor_version] = react_native_json['version'].split('.')[1].to_i
+  if result[:react_native_minor_version] == 0 # nightly
+    result[:react_native_minor_version] = 1000
+  end
+  result[:react_native_node_modules_dir] = File.expand_path(react_native_node_modules_dir)
+
+  return result
+end