Add dimIndex for callback formatter

axis in a inner data structure, should not be exposed to user.

unitform `dim` to `dimension`.

Revert #10487 . See the comments on the PR. 

Fix symbol function

Tweak the last commit

Fix markLine in stack.
(1) when xAxis or yAxis is set, the markLine is layout only by the given xAxis or yAxis value but has nothing to do with data
(2) Stacked dimension should be retrieved by util `dataStackHelper` but not visit private props directly
(3) valueIndex fix.

* New Feature--series.label.position  add rightTop,rightBottom,leftTop,leftBottom

* style: fix style in funnel text position

fix #9363

backward compat when dim is a number-like string.

Fix negetive number or string exist in dimensions array, the correspo…