[test] Update the wrong branch impl in test_cfg_continue

[galeselee]

Issue: # related to #7293 conversation

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[galeselee]

@jim19930609 @lin-hitonami
Unfortunately, when I run the code below an assertion error will be thrown.

import taichi as ti

ti.init(ti.cpu, print_kernel_llvm_ir=True)

def test_cfg_continue():
    x = ti.field(dtype=int, shape=1)
    state = ti.field(dtype=int, shape=1)

    @ti.kernel
    def foo():
        for p in range(1):
            if state[p] == 0:
                x[p] = 1
                continue

            x[p] = 100


    foo()
    print(x[0])
    assert x[0] == 1

test_cfg_continue()

Error info(and x[0] will be 0)

Traceback (most recent call last):
  File "cfg.py", line 23, in <module>
    test_cfg_continue()
  File "cfg.py", line 21, in test_cfg_continue
    assert x[0] == 1
AssertionError