More specific tool message for memory tool

[roblourens]

Testing #274987

Could say "viewed memory", etc

[bhavyaus]

microsoft/vscode-copilot-chat#3295

[bryanchen-d]

Was there code changes checked in for this issue? and how should we verify it?

[bryanchen-d]

Also, it doesn't seem to work for me ( on latest insiders with BYOK), did I miss anything?