fix(format): preserve literal replacement characters in values

[Hanabi9248]

Brief Information

• bug fixing
• new feature
• others

What does this PR do?

Preserves literal dollar sequences in values inserted into formatter templates.

Details

Before: What was the problem?

Formatting {a} with a series name of Price $$ returns Price $. A name containing $& can reinsert the placeholder instead of displaying the name, including when HTML encoding is enabled.

Both formatTpl and formatTplSimple pass values directly as replacement strings, so String.replace interprets these sequences.

After: How does it behave after the fixing?

Callback replacements insert the values literally. HTML encoding and indexed series formatting stay unchanged.

Document Info

• This PR doesn't relate to document changes

Misc

Related test cases or examples to use the new APIs

Three tests cover literal replacement sequences with and without HTML encoding, simple templates, indexed series, and numeric values. All three fail before the fix.

Validation: 197 unit tests pass; npm run build:lib, npm run checktype, ESLint on the changed files, and git diff --check pass. Browser visual tests were not run.

Merging options

• Please squash the commits into a single one when merging.

[echarts-bot]

Thanks for your contribution!
The community will review it ASAP. In the meanwhile, please checkout the coding standard and Wiki about How to make a pull request.

Please DO NOT commit the files in dist, i18n, and ssr/client/dist folders in a non-release pull request. These folders are for release use only.

[Copilot]

🟢 Approval recommended

The focused implementation correctly resolves the replacement-string issue with adequate regression coverage.

Pull request overview

Fixes formatter substitutions so dollar sequences in values remain literal.

Changes:

• Uses callback replacements in both template formatters.
• Adds coverage for HTML encoding, indexed series, and numeric values.

File summaries

File	Description
src/util/format.ts	Preserves literal replacement characters.
test/ut/spec/util/format.test.ts	Adds formatter regression tests.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Balanced

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[plainheart]

Hi, thanks for your contribution! I plan to include it in v6.1.1. Can you change the target branch to the release branch?

[Hanabi9248]

Retargeted to release and rebased the two commits onto it. The diff still contains only the formatter fix and its tests. All 197 unit tests, the library build, type checks, and scoped ESLint pass on the release base. Thanks!

[echarts-bot]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍