Fix palette flickering

[fabio-silva]

percona/pmm#5013
percona/grafana#874

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4220-b08c111
Client docker: perconalab/pmm-client-fb:PR-4220-b08c111
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4220-b08c111
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-b08c111.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4220-b08c111&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-b08c111.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5148/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4220-5dee902
Client docker: perconalab/pmm-client-fb:PR-4220-5dee902
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4220-5dee902
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-5dee902.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4220-5dee902&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-5dee902.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5160/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4220-34baa14
Client docker: perconalab/pmm-client-fb:PR-4220-34baa14
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4220-34baa14
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-34baa14.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4220-34baa14&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-34baa14.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5170/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4220-9e45811
Client docker: perconalab/pmm-client-fb:PR-4220-9e45811
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4220-9e45811
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-9e45811.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4220-9e45811&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-9e45811.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5182/

[JNKPercona]

Server docker: perconalab/pmm-server-fb:PR-4220-d5d8e94
Client docker: perconalab/pmm-client-fb:PR-4220-d5d8e94
Watchtower docker: perconalab/pmm-watchtower-fb:PR-4220-d5d8e94
Client tarball: https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-d5d8e94.tar.gz
Staging instance: https://pmm.cd.percona.com/job/pmm3-aws-staging-start/parambuild/?DOCKER_VERSION=perconalab/pmm-server-fb:PR-4220-d5d8e94&CLIENT_VERSION=https://s3.us-east-2.amazonaws.com/pmm-build-cache/PR-BUILDS/pmm-client/pmm-client-PR-4220-d5d8e94.tar.gz

[JNKPercona]

API tests have succeded: https://pmm.cd.percona.com/job/pmm3-api-tests/5189/