K2: Refine handling of Delegate resolution mode

- Move it out of the ContextDependent hierarchy
- Get rid of many controversial checks that were necessary because
Delegate was a ContextDependent inheritor
- Actually fix semantics for lambda processing

Previously, lambdas as delegate expression were not being analyzed
thus leading to an exception (see KT-64635), and this change
forces analyzing them in the same mode as ContextIndependent
(thus `{}` made by default `() -> Unit` leaving to DELEGATE_SPECIAL_FUNCTION_MISSING)

Before this change, new test was failing with an exception.

I've analyzed all `is ContextDependent` and it seems that none of them
is relevant to delegates.

^KT-64635 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -10687,6 +10687,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                     runTest("compiler/testData/diagnostics/tests/delegatedProperty/inference/labeledDelegatedExpression.kt");
                 }
 
+                @Test
+                @TestMetadata("lambdaDelegate.kt")
+                public void testLambdaDelegate() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/delegatedProperty/inference/lambdaDelegate.kt");
+                }
+
                 @Test
                 @TestMetadata("lambdaWithMultipleReturns.kt")
                 public void testLambdaWithMultipleReturns() throws Exception {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -10687,6 +10687,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                     runTest("compiler/testData/diagnostics/tests/delegatedProperty/inference/labeledDelegatedExpression.kt");
                 }
 
+                @Test
+                @TestMetadata("lambdaDelegate.kt")
+                public void testLambdaDelegate() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/delegatedProperty/inference/lambdaDelegate.kt");
+                }
+
                 @Test
                 @TestMetadata("lambdaWithMultipleReturns.kt")
                 public void testLambdaWithMultipleReturns() throws Exception {