Increase SAM search radius and cap cost at 3mil (#529)

Fixes https://github.com/openfrontio/OpenFrontIO/issues/515

## Description:

Bumping SAM launcher search range from 75 to 100. Also, decreasing the
max cost of the SAM to 3 mil (down from 4.5mil)

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [X] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [X] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

## Please put your Discord username so you can be contacted if a bug or
regression is found:

bypie5

---------

Co-authored-by: APuddle210 <david.eskin@gmail.com>

src/core/configuration/DefaultConfig.ts

@@ -330,7 +330,7 @@ export class DefaultConfig implements Config {
             p.type() == PlayerType.Human && this.infiniteGold()
               ? 0
               : Math.min(
-                  1_500_000 * 3,
+                  3_000_000,
                   (p.unitsIncludingConstruction(UnitType.SAMLauncher).length +
                     1) *
                     1_500_000,