[improvement][semantic-fe] Improved validation logic and prompt copywriting for data source/dimension/metric editing and creation.
[improvement][semantic-fe] Improved user experience for visual modeling. Now, when using the legend to control the display/hide of data sources and their associated metric dimensions, the canvas will be re-layout based on the activated data source in the legend.
Co-authored-by: tristanliu <tristanliu@tencent.com>