Use version of C++ grammar from 1.37.1

There is an issue in the current version of the grammar that causes duplicate scopes. Until that's fixed, rolling back

extensions/cpp/cgmanifest.json

@@ -6,11 +6,11 @@
 				"git": {
 					"name": "jeff-hykin/cpp-textmate-grammar",
 					"repositoryUrl": "https://github.com/jeff-hykin/cpp-textmate-grammar",
-					"commitHash": "031ef619bef4c5a1ca46e6fa69d7c913e0c32068"
+					"commitHash": "e33a317ccd0babba4b07ffc042ab9796e6412ddc"
 				}
 			},
 			"license": "MIT",
-			"version": "1.13.2",
+			"version": "1.8.15",
 			"description": "The files syntaxes/c.json and syntaxes/c++.json were derived from https://github.com/atom/language-c which was originally converted from the C TextMate bundle https://github.com/textmate/c.tmbundle."
 		},
 		{

extensions/cpp/test/colorize-results/test-23630_cpp.json

 [
 	{
 		"c": "#",
-		"t": "source.cpp keyword.control.directive.conditional.ifndef.cpp punctuation.definition.directive.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp punctuation.definition.directive.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",
@@ -12,7 +12,7 @@
 	},
 	{
 		"c": "ifndef",
-		"t": "source.cpp keyword.control.directive.conditional.ifndef.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",
@@ -23,7 +23,7 @@
 	},
 	{
 		"c": " ",
-		"t": "source.cpp meta.preprocessor.conditional.cpp",
+		"t": "source.cpp meta.preprocessor.cpp",
 		"r": {
 			"dark_plus": "meta.preprocessor: #569CD6",
 			"light_plus": "meta.preprocessor: #0000FF",
@@ -34,7 +34,7 @@
 	},
 	{
 		"c": "_UCRT",
-		"t": "source.cpp meta.preprocessor.conditional.cpp entity.name.function.preprocessor.cpp",
+		"t": "source.cpp meta.preprocessor.cpp entity.name.function.preprocessor.cpp",
 		"r": {
 			"dark_plus": "entity.name.function: #DCDCAA",
 			"light_plus": "entity.name.function: #795E26",
@@ -100,7 +100,7 @@
 	},
 	{
 		"c": "#",
-		"t": "source.cpp keyword.control.directive.endif.cpp punctuation.definition.directive.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp punctuation.definition.directive.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",
@@ -111,7 +111,7 @@
 	},
 	{
 		"c": "endif",
-		"t": "source.cpp keyword.control.directive.endif.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",

extensions/cpp/test/colorize-results/test-23850_cpp.json

 [
 	{
 		"c": "#",
-		"t": "source.cpp keyword.control.directive.conditional.ifndef.cpp punctuation.definition.directive.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp punctuation.definition.directive.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",
@@ -12,7 +12,7 @@
 	},
 	{
 		"c": "ifndef",
-		"t": "source.cpp keyword.control.directive.conditional.ifndef.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",
@@ -23,7 +23,7 @@
 	},
 	{
 		"c": " ",
-		"t": "source.cpp meta.preprocessor.conditional.cpp",
+		"t": "source.cpp meta.preprocessor.cpp",
 		"r": {
 			"dark_plus": "meta.preprocessor: #569CD6",
 			"light_plus": "meta.preprocessor: #0000FF",
@@ -34,7 +34,7 @@
 	},
 	{
 		"c": "_UCRT",
-		"t": "source.cpp meta.preprocessor.conditional.cpp entity.name.function.preprocessor.cpp",
+		"t": "source.cpp meta.preprocessor.cpp entity.name.function.preprocessor.cpp",
 		"r": {
 			"dark_plus": "entity.name.function: #DCDCAA",
 			"light_plus": "entity.name.function: #795E26",
@@ -89,7 +89,7 @@
 	},
 	{
 		"c": "#",
-		"t": "source.cpp keyword.control.directive.endif.cpp punctuation.definition.directive.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp punctuation.definition.directive.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",
@@ -100,7 +100,7 @@
 	},
 	{
 		"c": "endif",
-		"t": "source.cpp keyword.control.directive.endif.cpp",
+		"t": "source.cpp meta.preprocessor.cpp keyword.control.directive.conditional.cpp",
 		"r": {
 			"dark_plus": "keyword.control: #C586C0",
 			"light_plus": "keyword.control: #AF00DB",