Release 4.8.0

fix(geo): fix default name property when parsing GeoJSON

fix(bar): fix bar background incorrect on polar

fix(axis): fix typo in #12371

fix syntax error

create release branch 4.8.0

Note: the implementation of "insert levelModel" is modified from "Tree.getModel"
to "beforeLink  nodeData.wrapMethod('getItemModel', ...)", because the former
one miss the case of `data.getItemModel`, which is needed in label formatter fetcher.

`leavesModel` should be inserted between the node `itemModel` and the `seriesModel` in the "parentModel" chain.
It can be added either via [A] "beforeLink - nodeData.wrapMethod('getItemModel, ...)"
or via [B] "TreeNode.getModel ".
But `TreeSeres` both use the two strategy, which causes the `leavesModel` is inserted twice.

In fact the strategy [A] have some defect (do not cover the case `data.getItemModel(...)`).
So [A] should not be used any more. [B] is recommended.

Fix sankey link value is 0, node will disappear

Feature: add tooltip for edges(links) (#12006)

Add missing param for treemap setLabelStyle

Fix: Calendar fix for DST

showLoading align center

fix(line): fix memory explosion issue with gradient, shadow and animation.

fix(bmap): fix bmap style changed by the sdk and cause unexpected refresh bug

fix(line): fix line clip bug in chromium

Fix potential security risk

[#12386] Added series.typeNames values values to english lang.