[Kapt] Ensure flag names and default values are consistent

Group flag names and default values in one place to make the code easier
to read and prevent mistakes and inconsistencies.

plugins/kapt3/kapt3-base/src/org/jetbrains/kotlin/kapt3/base/KaptOptions.kt

@@ -60,11 +60,8 @@ class KaptOptions(
         val processingOptions: MutableMap<String, String> = mutableMapOf()
         val javacOptions: MutableMap<String, String> = mutableMapOf()
 
-        val flags: MutableSet<KaptFlag> = mutableSetOf(
-            KaptFlag.USE_LIGHT_ANALYSIS,
-            KaptFlag.INCLUDE_COMPILE_CLASSPATH,
-            KaptFlag.KEEP_KDOC_COMMENTS_IN_STUBS
-        )
+        // Initialize this set with the flags that are enabled by default. This set may be changed later (with flags added or removed).
+        val flags: MutableSet<KaptFlag> = KaptFlag.values().filter { it.defaultValue }.toMutableSet()
 
         var mode: AptMode = AptMode.WITH_COMPILATION
         var detectMemoryLeaks: DetectMemoryLeaksMode = DetectMemoryLeaksMode.DEFAULT
@@ -104,19 +101,19 @@ interface KaptFlags {
     }
 }
 
-enum class KaptFlag(val description: String) {
+enum class KaptFlag(val description: String, val defaultValue: Boolean = false) {
     SHOW_PROCESSOR_TIMINGS("Show processor time"),
     VERBOSE("Verbose mode"),
     INFO_AS_WARNINGS("Info as warnings"),
-    USE_LIGHT_ANALYSIS("Use light analysis"),
+    USE_LIGHT_ANALYSIS("Use light analysis", defaultValue = true),
     CORRECT_ERROR_TYPES("Correct error types"),
     DUMP_DEFAULT_PARAMETER_VALUES("Dump default parameter values"),
     MAP_DIAGNOSTIC_LOCATIONS("Map diagnostic locations"),
     STRICT("Strict mode"),
-    INCLUDE_COMPILE_CLASSPATH("Detect annotation processors in compile classpath"),
+    INCLUDE_COMPILE_CLASSPATH("Detect annotation processors in compile classpath", defaultValue = true),
     INCREMENTAL_APT("Incremental annotation processing (apt mode)"),
     STRIP_METADATA("Strip @Metadata annotations from stubs"),
-    KEEP_KDOC_COMMENTS_IN_STUBS("Keep KDoc comments in stubs")
+    KEEP_KDOC_COMMENTS_IN_STUBS("Keep KDoc comments in stubs", defaultValue = true),
     ;
 }