feat(perf): ship ModernFix dynamic_resources, add Flerovium and Iris Flywheel Compat

Bench (proxy 9900X/7800XT, see analysis/client-perf/RESULTS-proxy.md):
- ModernFix mixin.perf.dynamic_resources=true: startup -7.6 s, S1 p99
  9.11 -> 8.48 ms, S2 1% low 236 -> 264 fps (B6). Enforced packwiz file
  because ModernFix reads it before Default Options. Missing-texture check
  waived by owner; issues to be reported from play.
- Flerovium 1.1.2 (client): mob-pen S3 p99 ~0.9 ms better (B12b).
- Iris Flywheel Compat 2.4.0 (client): with a shaderpack, Create floor
  p99 13.3 -> 4.0 ms (Flywheel instancing kept under Iris) (B12b).
Deck tier already ships DH's LOW quality preset, so no DH change.

index.toml

@@ -2,11 +2,11 @@ hash-format = "sha256"
 
 [[files]]
 file = "config/akashictome-common.toml"
-hash = "4e479c86ddfec0c5e28f07034f033a10abae404309f38ccc4bfc15da9de2dfa2"
+hash = "190ba9edfb6960b86a2dac84630f9c53ee8f6492b745db92443e92d1dd46b5bd"
 
 [[files]]
 file = "config/alexsmobs-common.toml"
-hash = "bc47ee67032ceab8b2b408819ce9b268812f37da8f13b9b7efeae0deed607c4b"
+hash = "3a5be6512536e29584209b836382cee74d4aad64564df89f041936f58700ec33"
 
 [[files]]
 file = "config/crittersandcompanions-common.json5"
@@ -48,6 +48,10 @@ hash = "62034e0589087dab02d1a15192ad313a57f907d5ee9ebbf8853151f7831851a1"
 file = "config/fowlplay.json5"
 hash = "09ad767a358310e9d38e632ba0e670b0afd1554c162eadb6928d106df17b66c3"
 
+[[files]]
+file = "config/modernfix-mixins.properties"
+hash = "ca92e91a2d856d42e4a5b1ba1900fbed0e942bcbeddd75c0195a2375ade75695"
+
 [[files]]
 file = "config/paxi/datapacks/onion-fixes/data/adorablehamsterpets/recipe/cucumber_crate.json"
 hash = "21b11674b18c3fb0d8292095cf7c12bca82ef4054ec3f1cd8d1e0222d1655629"
@@ -614,6 +618,11 @@ file = "mods/fishermans-haven.pw.toml"
 hash = "d72a60c2053f10a447bdd05577674eeb8d0253a3ca02cb40776e063db556dda2"
 metafile = true
 
+[[files]]
+file = "mods/flerovium.pw.toml"
+hash = "9ab20de2d63037f055d6b614013389e0198068bab536dfd62eebd913e5222fe1"
+metafile = true
+
 [[files]]
 file = "mods/fowlplay.pw.toml"
 hash = "549e72a053da13a50404bd0901b75ce25c6045e778d5a89afcf58e9b5e1945f5"
@@ -729,6 +738,11 @@ file = "mods/inventory-particles.pw.toml"
 hash = "7ff791a8a6074a5f580a0a1899de69cff45ccf6db0a99d83494d57ff1a4cee43"
 metafile = true
 
+[[files]]
+file = "mods/iris-flw-compat.pw.toml"
+hash = "ed85b2ed42beb6523223eef6f0ae397ed29f8059b2bf5aa08d8598de04865614"
+metafile = true
+
 [[files]]
 file = "mods/iris-veil-compat.pw.toml"
 hash = "69f9051c61c05546a2bf008654149a101814842bc2bf384df5c0ee0d64301ccd"