K2: Fix bounds erasure for raw types

Basically, this commit reworks eraseToUpperBound* stuff
Instead of a bunch of vague flags, we introduce two modes
(rawTypes/intersection emptiness checker) which defined those flags.

Also, it makes choosing `eraseArgumentsDeeply` option always because
that how it works in K1 and also use invariant projection inside
`eraseArgumentsDeeply` for raw types for the same reason.

^KT-57198 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -25043,6 +25043,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                     runTest("compiler/testData/diagnostics/tests/platformTypes/rawTypes/nonGenericRawMember.kt");
                 }
 
+                @Test
+                @TestMetadata("nonProjectedInnerErasure.kt")
+                public void testNonProjectedInnerErasure() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/platformTypes/rawTypes/nonProjectedInnerErasure.kt");
+                }
+
                 @Test
                 @TestMetadata("nonRawArraysInRawType.kt")
                 public void testNonRawArraysInRawType() throws Exception {