### What changes were proposed in this pull request?
Now that all the temporary views are wrapped with `TemporaryViewRelation`(#31273, #31652, and #31825), this PR proposes to update `SessionCatalog`'s APIs for temporary views to take or return more concrete types.
APIs that will take `TemporaryViewRelation` instead of `LogicalPlan`:
```
createTempView, createGlobalTempView, alterTempViewDefinition
```
APIs that will return `TemporaryViewRelation` instead of `LogicalPlan`:
```
getRawTempView, getRawGlobalTempView
```
APIs that will return `View` instead of `LogicalPlan`:
```
getTempView, getGlobalTempView, lookupTempView
```
### Why are the changes needed?
Internal refactoring to work with more concrete types.
### Does this PR introduce _any_ user-facing change?
No, this is internal refactoring.
### How was this patch tested?
Updated existing tests affected by the refactoring.
Closes#31906 from imback82/use_temporary_view_relation.
Authored-by: Terry Kim <yuminkim@gmail.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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