[C][Client] Disable escaping the parameter name in URL path string

Created by: ityuhui

When the path parameter name is a C/C++ keyword, e.g. namespace, the generated code will escape the parameter name, e.g. _namespace:

    snprintf(localVarPath, sizeOfPath, "/apis/apps/v1/namespaces/{namespace}/controllerrevisions");

    // Path Params
    long sizeOfPathParams__namespace = strlen(_namespace)+3 + strlen("{ _namespace }");
...
    char* localVarToReplace__namespace = malloc(sizeOfPathParams__namespace);
    sprintf(localVarToReplace__namespace, "{%s}", "_namespace");   //<--- This is not right, {_namespace} cannot replace namespace in localVarPath "/apis/apps/v1/namespaces/{namespace}/controllerrevisions"

    localVarPath = strReplace(localVarPath, localVarToReplace__namespace, _namespace);

The {_namespace} in localVarToReplace__namespace should not be escaped, it should be {namespace}, then it can be used to replace in localVarPath "/apis/apps/v1/namespaces/{namespace}/controllerrevisions"

So this PR will disable escaping the parameter name in URL path string.

This PR relays the PR https://github.com/OpenAPITools/openapi-generator/pull/8205

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@wing328 @zhemant @michelealbano

modules/openapi-generator/src/main/resources/C-libcurl/api-body.mustache

@@ -116,13 +116,13 @@ end:
     {{#pathParams}}
 
     // Path Params
-    long sizeOfPathParams_{{{paramName}}} = {{#pathParams}}{{#isLong}}sizeof({{paramName}})+3{{/isLong}}{{#isString}}strlen({{paramName}})+3{{/isString}}{{^-last}} + {{/-last}}{{/pathParams}} + strlen("{ {{paramName}} }");
+    long sizeOfPathParams_{{{paramName}}} = {{#pathParams}}{{#isLong}}sizeof({{paramName}})+3{{/isLong}}{{#isString}}strlen({{paramName}})+3{{/isString}}{{^-last}} + {{/-last}}{{/pathParams}} + strlen("{ {{baseName}} }");
     {{#isNumeric}}
     if({{paramName}} == 0){
         goto end;
     }
     char* localVarToReplace_{{paramName}} = malloc(sizeOfPathParams_{{paramName}});
-    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{paramName}}");
+    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{baseName}}");
 
     char localVarBuff_{{paramName}}[256];
     intToStr(localVarBuff_{{paramName}}, {{paramName}});
@@ -135,7 +135,7 @@ end:
         goto end;
     }
     char* localVarToReplace_{{paramName}} = malloc(sizeOfPathParams_{{paramName}});
-    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{paramName}}");
+    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{baseName}}");
 
     char localVarBuff_{{paramName}}[256];
     intToStr(localVarBuff_{{paramName}}, {{paramName}});
@@ -148,7 +148,7 @@ end:
         goto end;
     }
     char* localVarToReplace_{{paramName}} = malloc(sizeOfPathParams_{{paramName}});
-    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{paramName}}");
+    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{baseName}}");
 
     char localVarBuff_{{paramName}}[256];
     intToStr(localVarBuff_{{paramName}}, {{paramName}});
@@ -161,7 +161,7 @@ end:
         goto end;
     }
     char* localVarToReplace_{{paramName}} = malloc(sizeOfPathParams_{{paramName}});
-    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{paramName}}");
+    snprintf(localVarToReplace_{{paramName}}, sizeOfPathParams_{{paramName}}, "{%s}", "{{baseName}}");
 
     char localVarBuff_{{paramName}}[256];
     intToStr(localVarBuff_{{paramName}}, {{paramName}});
@@ -174,7 +174,7 @@ end:
         goto end;
     }
     char* localVarToReplace_{{paramName}} = malloc(sizeOfPathParams_{{paramName}});
-    sprintf(localVarToReplace_{{paramName}}, "{%s}", "{{paramName}}");
+    sprintf(localVarToReplace_{{paramName}}, "{%s}", "{{baseName}}");
 
     localVarPath = strReplace(localVarPath, localVarToReplace_{{paramName}}, {{paramName}});
     {{/isString}}
@@ -183,7 +183,7 @@ end:
         goto end;
     }
     char* localVarToReplace_{{paramName}} = malloc(sizeOfPathParams_{{paramName}});
-    sprintf(localVarToReplace_{{paramName}}, "{%s}", "{{paramName}}");
+    sprintf(localVarToReplace_{{paramName}}, "{%s}", "{{baseName}}");
 
     localVarPath = strReplace(localVarPath, localVarToReplace_{{paramName}}, {{paramName}});
     {{/isUuid}}