fix ExpansionBuilder bug

[jzy-chitong56]

current_expansion should check not_taken_expansion I think the not_taken_expansion significance is let ExpansionBuilder and StartExpansionAM not take not_taken_expansion , so on ExpansionBuilder and StartExpansionAM cannot set null when current_expansion == not_taken_expansion
https://github.com/SMUnlimited/AMAI/issues/244

I am still adjusting the not_taken_expansion logic, now just know is that it has influenced MultipleMinefix

now only can temporarily submit a repair ai_time - exp_time_count > exp_second_time judgment

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not_taken_expansion is Completely different expansion logic , maybe can not use ChooseExpansion take , should be expanding beyond the StartExpansionAM logic of expansion, rather than expansion the same StartExpansionAM mine