fuzz: Fix infinite loops in table_ops fuzzers

I forgot in the recent refactoring to add back in fuel support to the
`table_ops` fuzzer. This commit re-adds the previously existent logic to
always use fuel to cancel execution of the table_ops fuzzer.

crates/fuzzing/src/generators.rs

@@ -58,7 +58,7 @@ pub struct WasmtimeConfig {
     debug_info: bool,
     canonicalize_nans: bool,
     interruptable: bool,
-    consume_fuel: bool,
+    pub(crate) consume_fuel: bool,
     memory_config: MemoryConfig,
     force_jump_veneers: bool,
 }