[Analysis API] Fix exceptions around type parameters being treated as callables

- `toResolvedCallableSymbol`: cast defensively because
  the resolved symbol might not be a callable symbol.
- `toKtCallInfo`: Check that the resolved symbol is actually callable.

^KTIJ-23003 fixed

analysis/analysis-api/testData/components/importOptimizer/analyseImports/referencesWithErrors/unusedTypeHiddenByTypeParameter_invalidAsArgument.imports

@@ -0,0 +1 @@
+dependency.T

analysis/analysis-api/testData/components/importOptimizer/analyseImports/referencesWithErrors/unusedTypeHiddenByTypeParameter_invalidAsArgument.kt

@@ -0,0 +1,15 @@
+// See: KTIJ-23003 (ClassCastException)
+
+// FILE: main.kt
+package test
+
+import dependency.T
+
+fun <T> usage() {
+    println(T)
+}
+
+// FILE: dependency.kt
+package dependency
+
+class T(i: Int)