test: migrate 700_e2e rows to corpus fixtures; retire the carrier

136 rows migrated, 0 already owned, 3 wwstage-failing rows held out.

test/wcc/data/r700_shortcircuit_bool/case.ww

@@ -0,0 +1,11 @@
+//ww:run-exit 42
+// Migrated from 700_e2e row 138.
+package main;
+fn main() i32 = {
+  let a: bool = (1 > 0) && (2 < 1);
+  let b: bool = (1 < 0) || (2 > 1);
+  let n: i32 = 0;
+  if (!a) { n += 10; };
+  if (b)  { n += 32; };
+  return n;
+};