88455 Reland remove DefaultShaderWarmup (team, framework, cla: yes, d: examples, waiting for tree to go green)

89021 Add smoke tests for all the examples, fix 17 broken examples. (team, tool, framework, f: material design, cla: yes, f: cupertino, d: examples)

89062 Fix (Vertical)Divider samples & docs (team, framework, f: material design, cla: yes, d: examples, waiting for tree to go green)

89076 Add all cubics to Cubic class doc (framework, cla: yes, d: api docs, d: examples, waiting for tree to go green, documentation)

89390 Reduce required Windows CMake version to 3.14 (team, tool, cla: yes, d: examples)