connects #2144

This pull request improves how read dates are parsed during data import, ensuring consistent handling of different date formats. The main change is the introduction of a new getTemplateReadDate method in UploadDataV3Service, which standardizes date parsing across multiple import scenarios. Additionally, a minor fix was made in AccountReportsService to prevent errors when the selected report is null.

Date parsing improvements:

• Added the getTemplateReadDate method to UploadDataV3Service to correctly parse dates in YYYY-MM-DD format and fallback to the default Date constructor for other formats. This change helps handle template dates more reliably.
• Replaced all instances of direct new Date(readDateStr) calls with getTemplateReadDate(readDateStr) throughout UploadDataV3Service, ensuring consistent date parsing for utility meter and facility data imports. [1] [2] [3] [4] [5] [6] [7]

Error prevention:

• Updated AccountReportsService to only validate and compare reports when a report is actually selected, preventing potential errors when the report is null.