pcr: reorder time series dashboards

[alicia-l2]

Swapped order of Replication Lag and Logical Bytes graphs in Physical Cluster Replication DB Console

Fixes: #147621
Release note: none

[cockroach-teamcity]

This change is 

[cockroachlabs-cla-agent]

All committers have signed the CLA.

[msbutler]

@alicia-l2 nice! a few nits:

• 2 general conventions for commit/PR/issue titles are: 1) describe an action; 2) prefix with code area . Instead of PCR DB Console Metrics, i would say something likepcr: reorder time series dashboards

• The commit body should be:

 Fixes #github issue number
 
 Release note: none

for more on commit message guidelines https://cockroachlabs.atlassian.net/wiki/spaces/CRDB/pages/73072807/Git+Commit+Messages

[alicia-l2]

@msbutler done, what happens next?

[msbutler]

@alicia-l2 some next steps:

• make sure the commit message looks identical to the pr text on github. you can do this via git commit --amend
• mark this PR as ready for review so i can approve it!