JVM_IR: apply TailCallOptimizationLowering to all suspend functions

Even if a function is known to be tail call because it's a compiler
generated bridge, the tail return might still need to be added in case
of Unit return type.

compiler/testData/codegen/box/coroutines/unitTypeReturn/interfaceDelegation.kt

@@ -0,0 +1,34 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+// WITH_RUNTIME
+// WITH_COROUTINES
+
+import helpers.*
+import kotlin.coroutines.*
+import kotlin.coroutines.intrinsics.*
+
+suspend fun pause(): Unit = suspendCoroutineUninterceptedOrReturn { x ->
+    x.resume(Unit)
+    COROUTINE_SUSPENDED
+}
+
+interface I {
+    suspend fun f()
+}
+
+var unpaused = false
+
+class A : I {
+    override suspend fun f() {
+        pause()
+        unpaused = true
+    }
+}
+
+class B(val x: I) : I by x
+
+fun box(): String {
+    suspend {
+        B(A()).f()
+    }.startCoroutine(EmptyContinuation)
+    return if (unpaused) "OK" else "fail: ignored suspension"
+}