Enable more tests and narrow ignores

lynglib/src/commonTest/kotlin/CoroutinesTest.kt

@@ -20,7 +20,7 @@ import net.sergeych.lyng.eval
 import kotlin.test.Ignore
 import kotlin.test.Test
 
-@Ignore("TODO(bytecode-only): uses fallback")
+@Ignore("TODO(bytecode-only): uses fallback (coroutines)")
 class TestCoroutines {
 
     @Test

lynglib/src/commonTest/kotlin/MIC3MroTest.kt

@@ -24,7 +24,7 @@ import net.sergeych.lyng.eval
 import kotlin.test.Ignore
 import kotlin.test.Test
 
-@Ignore("TODO(bytecode-only): uses fallback")
+@Ignore("TODO(bytecode-only): uses fallback (C3 MRO)")
 class MIC3MroTest {
 
     @Test

lynglib/src/commonTest/kotlin/MIDiagnosticsTest.kt

@@ -26,7 +26,6 @@ import kotlin.test.Test
 import kotlin.test.assertFails
 import kotlin.test.assertTrue
 
-@Ignore("TODO(bytecode-only): uses fallback (cast failure message)")
 class MIDiagnosticsTest {
 
     @Test
@@ -87,6 +86,7 @@ class MIDiagnosticsTest {
     }
 
     @Test
+    @Ignore("TODO(bytecode-only): cast message mismatch")
     fun castFailureMentionsActualAndTargetTypes() = runTest {
         val ex = assertFails {
             eval(

lynglib/src/commonTest/kotlin/MIQualifiedDispatchTest.kt

@@ -20,7 +20,7 @@ import net.sergeych.lyng.eval
 import kotlin.test.Ignore
 import kotlin.test.Test
 
-@Ignore("TODO(bytecode-only): uses fallback")
+@Ignore("TODO(bytecode-only): uses fallback (qualified MI)")
 class MIQualifiedDispatchTest {
 
     @Test

lynglib/src/commonTest/kotlin/NamedArgsTest.kt

@@ -26,7 +26,6 @@ import kotlin.test.Ignore
 import kotlin.test.Test
 import kotlin.test.assertFailsWith
 
-@Ignore("TODO(bytecode-only): uses fallback")
 class NamedArgsTest {
 
     @Test