[3.14] gh-134889: Fix handling of a few opcodes when optimizing `LOAD_FAST` (#134958) (#135187)

We were incorrectly handling a few opcodes that leave their operands on the stack. Treat all of these conservatively; assume that they always leave operands on the stack.

(cherry picked from commit 6b77af257c25d31f1f137e477cb23e63692ddf29)