fix: chart tool can't display chinese

[hjlarry]

Checklist:

Important

Please review the checklist below before submitting your pull request.

• Please open an issue before creating a PR or link to an existing issue
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

Description

Fixes #9657

the font file comes from here https://github.com/adobe-fonts/source-han-sans?tab=License-1-ov-file , please makesure the copyright is OK

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update, included: Dify Document
• Improvement, including but not limited to code refactoring, performance optimization, and UI/UX improvement
• Dependency upgrade

Testing Instructions

test locally

• Test A
• Test B

[laipz8200]

I hope to avoid uploading the font file directly to the code base. It is too large and will slow down the speed of users pulling the code.

Do we have a better way to fix this? For example, download fonts when building Docker Image?

[hjlarry]

I hope to avoid uploading the font file directly to the code base. It is too large and will slow down the speed of users pulling the code.

Do we have a better way to fix this? For example, download fonts when building Docker Image?

now I changed the implement detail:

• define a common used chinese font list of mac/linux/windows
• install the Noto CJK font for the docker environment
• try to find any installed font of current envrionment
• remove the old init_font() method, it seems useless

local test with windows and docker

[laipz8200]

LGTM