Add tests for obsolete issues

#KT-38804 Obsolete
 #KT-38801 Obsolete
 #KT-38835 Obsolete
 #KT-38737 Obsolete
 #KT-38664 Obsolete
 #KT-38549 Obsolete
 #KT-38766 Obsolete
 #KT-38714 Obsolete

compiler/testData/diagnostics/tests/inference/regressions/kt38549.kt

@@ -0,0 +1,18 @@
+// FIR_IDENTICAL
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun test(b: TestRepo) {
+    coEvery1 { b.save(any()) }
+}
+
+fun <T> coEvery1(stubBlock: suspend MockKMatcherScope.() -> T) {}
+
+class MockKMatcherScope {
+    inline fun <reified T : Any> any(): T = TODO()
+}
+
+class TestRepo : CrudRepository<Int, String>
+
+interface CrudRepository<T, K> {
+    fun <S : T?> save(entity: S): S = TODO()
+}

compiler/testData/diagnostics/tests/inference/regressions/kt38549.txt

@@ -0,0 +1,27 @@
+package
+
+public fun </*0*/ T> coEvery1(/*0*/ stubBlock: suspend MockKMatcherScope.() -> T): kotlin.Unit
+public fun test(/*0*/ b: TestRepo): kotlin.Unit
+
+public interface CrudRepository</*0*/ T, /*1*/ K> {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open fun </*0*/ S : T?> save(/*0*/ entity: S): S
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class MockKMatcherScope {
+    public constructor MockKMatcherScope()
+    public final inline fun </*0*/ reified T : kotlin.Any> any(): T
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class TestRepo : CrudRepository<kotlin.Int, kotlin.String> {
+    public constructor TestRepo()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun </*0*/ S : kotlin.Int?> save(/*0*/ entity: S): S
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}