35335 Using custom exception class for network loading error (a: images, cla: yes, framework)

35367 Add type to StreamChannel in generated test code. (cla: yes, tool)

35392 Add timer checking and Fake http client to testbed (cla: yes, tool)

35393 more ui-as-code (cla: yes, team)

35406 Refactor signal and command line handler from resident runner (cla: yes, team, tool)

35407 Manual engine roll (cla: yes, engine, team)

35408 Remove print (cla: yes)

35423 v1.7.8 hotfixes (cla: yes)

35424 Introduce image_list performance benchmark that runs on jit(debug) build. (a: images, a: tests, cla: yes, framework)