tests: add atomics_notify.wast

checking that notify with 0 waiters returns 0 on shared and non-shared
memory.

Signed-off-by: Harald Hoyer <harald@profian.com>

tests/misc_testsuite/threads/atomics_notify.wast

@@ -0,0 +1,18 @@
+;; From https://github.com/bytecodealliance/wasmtime/pull/5255
+;;
+
+(module
+  (memory 1 1)
+  (func (export "notify") (result i32) (memory.atomic.notify (i32.const 0) (i32.const -1)))
+)
+
+;; notify returns 0 on unshared memories
+(assert_return (invoke "notify") (i32.const 0))
+
+(module
+  (memory 1 1 shared)
+  (func (export "notify_shared") (result i32) (memory.atomic.notify (i32.const 0) (i32.const -1)))
+)
+
+;; notify returns 0 with 0 waiters
+(assert_return (invoke "notify_shared") (i32.const 0))