修复bug: NodeSelectorSlot只会记录初次调用记录

[lookingatstarts]

Describe what this PR does / why we need it

NodeSelectorSlot只会在创建Node时候记录资源的调用关系，这样就只会记录初次调用关系。
eg : A B C三个资源
ContextUtil.enter("invoice-tree");
// 第一次调用
Entry a = SphU.entry("A");
Entry b = SphU.entry("B");
Entry c = SphU.entry("C");
c.exit();
b.exit();
a.exit();
// 第二次调用
a = SphU.entry("A");
Entry d = SphU.entry("D");
d.exit();
a.exit();
仅仅会记录 A -> B -> C 调用关系，， 不会记录 A->D调用关系

Does this pull request fix one issue?

Describe how you did it

将NodeSelectorSlot记录调用的代码移出外围执行

Describe how to verify it

CtEntryTest有相关验证代码

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