Express "ALL_*" pipeline stages as including _valid_ bits

Fix #2187

chapters/synchronization.adoc

@@ -440,10 +440,11 @@ ifdef::VK_KHR_ray_tracing_maintenance1[]
 endif::VK_KHR_ray_tracing_maintenance1[]
 endif::VK_KHR_acceleration_structure,VK_NV_ray_tracing[]
   * ename:VK_PIPELINE_STAGE_2_ALL_GRAPHICS_BIT specifies the execution of
-    all graphics pipeline stages, and is equivalent to the logical OR of:
+    all graphics pipeline stages, that would be valid in the context that
+    this bitflag is provided, from the following list of stages:
 include::{generated}/sync/flagDefinitions/VK_PIPELINE_STAGE_2_ALL_GRAPHICS_BIT.adoc[]
-  * ename:VK_PIPELINE_STAGE_2_ALL_COMMANDS_BIT specifies all operations
-    performed by all commands supported on the queue it is used with.
+  * ename:VK_PIPELINE_STAGE_2_ALL_COMMANDS_BIT specifies all pipeline stages
+    that would be valid in the context that this bitflag is provided.
 ifdef::VK_EXT_conditional_rendering[]
   * ename:VK_PIPELINE_STAGE_2_CONDITIONAL_RENDERING_BIT_EXT specifies the
     stage of the pipeline where the predicate of conditional rendering is
@@ -660,8 +661,9 @@ ifdef::VK_NV_ray_tracing[flink:vkCmdTraceRaysNV]
 ifdef::VK_NV_ray_tracing+VK_KHR_ray_tracing_pipeline[,]
 ifdef::VK_KHR_ray_tracing_pipeline[flink:vkCmdTraceRaysKHR, or flink:vkCmdTraceRaysIndirectKHR]
 endif::VK_NV_ray_tracing,VK_KHR_ray_tracing_pipeline[]
-  * ename:VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT specifies the execution of all
-    graphics pipeline stages, and is equivalent to the logical OR of:
+  * ename:VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT specifies the execution of
+    all graphics pipeline stages, that would be valid in the context that
+    this bitflag is provided, from the following list of stages:
   ** ename:VK_PIPELINE_STAGE_DRAW_INDIRECT_BIT
 ifdef::VK_NV_mesh_shader,VK_EXT_mesh_shader[]
   ** ename:VK_PIPELINE_STAGE_TASK_SHADER_BIT_EXT
@@ -688,8 +690,8 @@ endif::VK_KHR_fragment_shading_rate,VK_NV_shading_rate_image[]
 ifdef::VK_EXT_fragment_density_map[]
   ** ename:VK_PIPELINE_STAGE_FRAGMENT_DENSITY_PROCESS_BIT_EXT
 endif::VK_EXT_fragment_density_map[]
-  * ename:VK_PIPELINE_STAGE_ALL_COMMANDS_BIT specifies all operations
-    performed by all commands supported on the queue it is used with.
+  * ename:VK_PIPELINE_STAGE_ALL_COMMANDS_BIT specifies all pipeline stages that
+    would be valid in the context that this bitflag is provided.
 ifdef::VK_EXT_conditional_rendering[]
   * ename:VK_PIPELINE_STAGE_CONDITIONAL_RENDERING_BIT_EXT specifies the
     stage of the pipeline where the predicate of conditional rendering is