bug: @type annotation overridden by type inference

[wang573287909]

Problem

When using @type annotation to explicitly specify a type, the type inference from assignment statement overrides the annotation type.

Reproduction

---@type ThunderStrikeInviteDataStruct
self.inviteData = nil  -- inferred as nil instead of ThunderStrikeInviteDataStruct

---@type _obj_inviteItem._obj_heroHeadItem_GoTable[]
self.guardObjList = {}  -- inferred as table instead of the specified array type

Expected Behavior

When @type annotation is used, it should take priority over type inference.

Root Cause

In the bind_type function (crates/emmylua_code_analysis/src/compilation/analyzer/common/mod.rs), when an existing type exists, new types are processed through merge_def_type, but it does not properly handle the priority relationship between DocType and InferType.

[xuhuanzy]

Display issue has been partially alleviated in #1113.