[Error] [lang] Add error when breaking/continuing a static for inside non-static if

[lin-hitonami]

Related issue = fixes #5729
Added nearest_non_static_if to the loop attribute. The NonStaticIfGuard maintains the nearest_non_static_if of the current loop.

For this kernel:

import taichi as ti

@ti.kernel
def test_static_loop():
    for i in ti.static(range(5)):
        x = 0.1
        if x == 0.0:
            print("consition statement")
            break
        print("after condition")

ti.init(arch=ti.cuda)

test_static_loop()

The error is like:

[Taichi] version 1.1.1, llvm 10.0.0, commit 6f9f5549, linux, python 3.10.4
[Taichi] Starting on arch=cuda
Traceback (most recent call last):
  File "/home/hitonami/test/test.py", line 14, in <module>
    test_static_loop()
  File "/home/hitonami/taichi/python/taichi/lang/kernel_impl.py", line 924, in wrapped
    raise type(e)('\n' + str(e)) from None
taichi.lang.exception.TaichiSyntaxError: 
On line 9 of file "/home/hitonami/test/test.py", in test_static_loop:
            break
            ^^^^^
On line 7 of file "/home/hitonami/test/test.py", in test_static_loop:
        if x == 0.0:
           ^^^^^^^^
You are trying to `break` a static `for` loop, but the `break` statement is inside a non-static `if`. 

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[lin-hitonami]

I don't think there are any cases anyone should break/continue a static for loop inside non-static if, so I made it an error.
Is this error message OK?

[ailzhang]

Thanks!