refactor(pojav): 调整vulkan驱动加载逻辑，根据渲染器主动加载vulkan

- 移除初始化函数开头的提前 Vulkan 加载调用
- 统一所有条件分支的大括号风格，保持代码格式一致性
- 将 Vulkan 加载调用移动到具体的渲染器配置分支中
- 为 vulkan_zink、gallium_freedreno 和 custom_gallium 渲染器添加 Vulkan 加载支持
- 修正 br_init() 函数调用的括号间距格式

Author: ShirosakiMio

FCLauncher/src/main/jni/pojav/egl_bridge.c

@@ -97,51 +97,48 @@ EXTERNAL_API void* pojavGetCurrentContext() {
 }
 
 int pojavInitOpenGL() {
-    load_vulkan();
     // Only affects GL4ES as of now
     const char *forceVsync = getenv("FORCE_VSYNC");
     if (!strcmp(forceVsync, "true"))
         pojav_environ->force_vsync = true;
 
     // NOTE: Override for now.
     const char *renderer = getenv("POJAV_RENDERER");
-    if (!strncmp("opengles", renderer, 8))
-    {
+    if (!strncmp("opengles", renderer, 8)) {
         pojav_environ->config_renderer = RENDERER_GL4ES;
         set_gl_bridge_tbl();
     }
 
-    if (!strcmp(renderer, "gallium_virgl"))
-    {
+    if (!strcmp(renderer, "gallium_virgl")) {
         pojav_environ->config_renderer = RENDERER_VIRGL;
         setenv("GALLIUM_DRIVER", "virpipe", 1);
         loadSymbolsVirGL();
         virglInit();
         return 0;
     }
 
-    if (!strcmp(renderer, "vulkan_zink"))
-    {
+    if (!strcmp(renderer, "vulkan_zink")) {
         pojav_environ->config_renderer = RENDERER_VK_ZINK;
+        load_vulkan();
         setenv("GALLIUM_DRIVER", "zink", 1);
         set_osm_bridge_tbl();
     }
 
-    if (!strcmp(renderer, "gallium_freedreno"))
-    {
+    if (!strcmp(renderer, "gallium_freedreno")) {
         pojav_environ->config_renderer = RENDERER_VK_ZINK;
+        load_vulkan();
         setenv("GALLIUM_DRIVER", "freedreno", 1);
         setenv("MESA_LOADER_DRIVER_OVERRIDE", "kgsl", 1);
         set_osm_bridge_tbl();
     }
 
-    if (!strcmp(renderer, "custom_gallium"))
-    {
+    if (!strcmp(renderer, "custom_gallium")) {
         pojav_environ->config_renderer = RENDERER_VK_ZINK;
+        load_vulkan();
         set_osm_bridge_tbl();
     }
 
-    if(br_init()) br_setup_window();
+    if (br_init()) br_setup_window();
 
     return 0;
 }