Closes gh-25582

Closes gh-25648

Closes gh-25577

Closes gh-25646

Update `FlywayAutoConfiguration`, `LiquibaseAutoConfiguration` and
`DataSourceInitializer` classes so that they no longer depend on
`DataSourceProperties`. DB migrations can now be performed against
a `@Bean` defined primary `DataSource` with an alternative
username/password.

This update also removed using fallback properties when a custom
connection `url` is defined with Flyway or Liquibase. We now assume
that `username`, `password` and `driver-class-name` will be provided
if the default values are unacceptable. Our previous logic was
particularly flawed if a custom URL caused a change of driver type.

Closes gh-25643

Refactor `DataSourceBuilder` to use direct property mappers rather than
the `Binder` and aliases. Supported DataSource types now include two-way
mappers which allows us to both get and set properties in a uniform way.

A new `derivedFrom` factory method has been added which allows a new
`DataSource` to be derived from an existing one. This update is
primarily to allow Flyway and Liquibase migrations to work against a
`@Bean` configured DataSource rather than assuming that the primary
DataSource was always created via auto-configuration.

See gh-25643

Align our property with the recently changed spring-kafka default.

Closes gh-25730

Closes gh-25647

Closes gh-25578

Closes gh-25728

Closes gh-25727

Closes gh-25698

Closes gh-25492

* pr/25721:
  Polish "Support sending metrics to InfluxDB v2"
  Support sending metrics to InfluxDB v2

Closes gh-25721

See gh-25721

See gh-25721

Closes gh-25723

Closes gh-25725

Closes gh-25724

Closes gh-25723

Close gh-25548

Closes gh-25722

Closes gh-25547

Closes gh-25720

Closes gh-25719

Closes gh-25718

Closes gh-25717

Closes gh-25716

Closes gh-25715

Closes gh-25714

This reverts commit 5488b8cb, reversing
changes made to dee0df5c.

See gh-25701