Fix KT-47708 in FIR by transferring SAM annotations to synthetic constr.

compiler/testData/diagnostics/testsWithStdLib/experimental/insideSAM.fir.kt

@@ -0,0 +1,21 @@
+// FIR_DUMP
+@RequiresOptIn
+annotation class ExperimentalKotlinAnnotation
+
+internal fun interface StableInterface {
+    @ExperimentalKotlinAnnotation // @ExperimentalStdlibApi
+    fun experimentalMethod()
+}
+
+fun regressionTestOverrides() {
+    val anonymous: StableInterface = object : StableInterface {
+        override fun <!OPT_IN_OVERRIDE_ERROR!>experimentalMethod<!>() {} // correctly fails check
+    }
+    val lambda = <!OPT_IN_USAGE_ERROR!>StableInterface<!> {} // this does not get flagged
+}
+
+@ExperimentalKotlinAnnotation
+fun suppressed() {
+    val lambda = StableInterface {}
+}
+