fix(tests): unset MONGOSH_TEST_ONLY_MAX_LOG_FILE_COUNT before running tests

Author: gagik

packages/cli-repl/src/cli-repl.spec.ts

@@ -1462,6 +1462,9 @@ describe('CliRepl', function () {
           it('can set log max file count', async function () {
             const testMaxFileCount = 123;
             cliRepl.config.logMaxFileCount = testMaxFileCount;
+            const oldEnvironmentLimit =
+              process.env.MONGOSH_TEST_ONLY_MAX_LOG_FILE_COUNT;
+            delete process.env.MONGOSH_TEST_ONLY_MAX_LOG_FILE_COUNT;
             await cliRepl.start(await testServer.connectionString(), {});
 
             expect(await cliRepl.getConfig('logMaxFileCount')).equals(
@@ -1470,6 +1473,9 @@ describe('CliRepl', function () {
             expect(cliRepl.logManager?._options.maxLogFileCount).equals(
               testMaxFileCount
             );
+
+            process.env.MONGOSH_TEST_ONLY_MAX_LOG_FILE_COUNT =
+              oldEnvironmentLimit;
           });
         });